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Ian Newton
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Ian Newton

   Biography

Ian earned a Ph.D. at Oxford University under the tutelage of David Lack. He mainly studied finches during the 1960s, and his interest in that group has continued to the present time. Beginning in the 1970s, he conducted extensive research on the long-term impacts of organochlorine pesticides on several raptor species and on the population ecology of the Eurasian Sparrowhawk. In 1979, he produced the classic book, Population ecology of raptors, and a comprehensive monograph on the Eurasian Sparrowhawk followed in 1986. From 1989-2000, he headed the Avian Biology Section at the Monks Wood Research Station and has continued his research on raptors since his "retirement" in 2000. He has authored or co-authored 13 books, published over 300 technical papers, and has made frequent TV and radio appearances. He has served as President of the British Ornithologists' Union and the British Ecological Society, as Chairman of the RSPB and The Peregrine Fund, and is currently Chairman of the British Trust for Ornithology. He has received numerous awards, including Order of the British Empire, the Union Medal and Goodman-Salvin Medal of the British Ornithologists' Union, and the Elliot Coues Award of the American Ornithologists' Union.

Centre for Ecology and Hydrology, Natural Environment Research Council
Monks Wood, Abbots Ripton  
Huntingdon,  Cambridgeshire  PE28 2LS  United Kingdom
Email: ine@ceh.ac.uk


   Research Interests

Avian population ecology, with particular interest in the factors that limit bird numbers and distributions, including pesticide impacts.

Species of Interest: 
  • Common Kestrel
  • Red Kite
  • Eurasian Sparrowhawk
  • Northern Goshawk
  • Golden Eagle
  • Merlin
  • Peregrine Falcon


   Publications

BOOKS:

Newton, I. 2010. Bird migration. Harper Collins, London. 400 pp.

Newton, I. 2008. The migration ecology of birds. Academic Press, London.

Sutherland, W.J., I. Newton, and R.E. Green (eds.). 2004. Bird ecology and conservation: a handbook of techniques. Oxford University Press, Oxford, UK.

Newton, I. 2003. The speciation and biogeography of birds. Academic Press, London.

Newton, I., R. Kavanagh, J. Olsen, and I. Taylor (eds.). 2002. Ecology and conservation of owls. CSIRO Publishing, Collingwood, Australia.

Newton, I. 1998. Population limitation in birds. Academic Press, London.

Newton, I. (ed.). 1990. Birds of prey. Merehurst Press, London.

Newton, I. (ed.). 1989. Lifetime reproduction in birds. Academic Press, London.

Newton, I. 1987, The sparrowhawk. Shire Publications, Buckinghamshire, UK. 24 pp.

Newton, I. 1986. The sparrowhawk. T. & A.D. Poyser, Calton, UK.

Newton, I., and R.D. Chancellor (eds.). 1985. Conservation studies on raptors. ICBP Technical Bulletin no. 5. International Council for Bird Preservation, Cambridge, UK.

Newton, I. 1979. Population ecology of raptors. T. & A.D. Poyser, Berkhamsted, UK.

Newton, I. 1972. Finches. Collins, London.

BOOK CHAPTERS:

Newton, I. 2011. Conference summary. Pp. 5-10 in R.T. Watson, T.J. Cade, M. Fuller, G. Hunt, and E. Potapov (eds.), Gyrfalcons and ptarmigan in a changing world. Vol. I. The Peregrine Fund, Boise, ID.       pdf

Newton, I. 2010. Irruptive migration. Pp. 221-229 in M.D. Breed and J. Moore (eds.), Encyclopedia of animal behavior. Vol. 2. Academic Press, Oxford, UK.       pdf

Newton, I. 2010. (Abstract) Studying population ecology: assessment of productivity and survival. P. 105 in G. Sundev, R. Watson, M. Curti, R. Yosef, E. Potapov, and M. Gilbert (eds.). Asian raptors: science and conservation for present and future: The proceedings of the 6th International Conference on Asian Raptors. Asian Raptor Research and Conservation Network, Mongolian Ornithological Society, and National University of Mongolia, Ulaanbaatar, Mongolia.        pdf

Green, R.E., W.G. Hunt, C.N. Parish, and I. Newton. 2009. Effectiveness of attempts to reduce exposure of free-ranging California Condors in Arizona and Utah to lead from spent ammunition. Pp. 1-14 in R.T. Watson, M. Fuller, M. Pokras, and W.G. Hunt (eds.), Ingestion of spent lead ammunition: implications for wildlife and humans. The Peregrine Fund, Boise, ID.

Newton, I. 2009. Summary of the main findings and conclusions. Pp. 1-3 in R.T. Watson, M. Fuller, M. Pokras, and W.G. Hunt (eds.), Ingestion of spent lead ammunition: implications for wildlife and humans. The Peregrine Fund, Boise, ID.

Newton, I. 2009. Introduction. Pp. 1-2 in R.T. Watson, M. Fuller, M. Pokras, and W.G. Hunt (eds.), Ingestion of spent lead ammunition: implications for wildlife and humans. The Peregrine Fund, Boise, ID.

Steenhof, K., and I. Newton. 2007. Assessing nesting success and productivity. Pp. 181-191 in D.M. Bird and K.L. Bildstein (eds.), Raptor research and management techniques. Hancock House, Surrey, British Columbia, Canada.       pdf

van den Burg, A.B., and I. Newton. 2003. Accipiter nisus Sparrowhawk. BWP Update 5:1-12.       pdf

Newton, I. 2003. The role of natural factors in the limitation of bird of prey numbers: a brief review of the evidence. Pp. 5-23 in D.B.A. Thompson, S.M. Redpath, A.H. Fielding, M. Marquiss, and C.A. Galbraith (eds.), Birds of prey in a changing environment. The Stationery Office, Edinburgh, Scotland.       pdf

Newton, I. 2003. The contribution of peregrine research and restoration to a better understanding of peregrines and other raptors. In T.J. Cade and W. Burnham (eds.), Return of the peregrine: a North American saga of tenacity and teamwork. The Peregrine Fund, Boise, ID.

Newton, I. 2003. Geographical patterns in bird migration. Pp. 211-224 in P. Berthold, E. Gwinner, and R. Sonnenschein (eds.), Avian migration. Springer-Verlag, Berlin.       pdf

Newton, I. 2002. Diseases in wild bird (free-living) populations. Pp. 217-234 in J.E. Cooper (ed.), Birds of prey: health and disease. Blackwell Science, Oxford, UK.

Newton, I. 2002. Sparrowhawk. in C.V. Wernham, M.P. Toms, J.H. Marchant, J.A. Clark, G.M. Siriwardena, and S.R. Baillie (eds.), The migration atlas: movements of the birds in Britain and Ireland. T. & A.D. Poyser, London.

Newton, I. 2002. Population limitation in Holarctic owls. Pp. 3-29 in I. Newton, R. Kavenagh, J. Olsen, and I. Taylor (eds.), Ecology and conservation of owls. CSIRO Publishing, Collingwood, Victoria, Australia.       pdf

Newton, I., and I. Wyllie. 2002. Rodenticides in British Barn Owls (Tyto alba). Pp. 287-293 in I. Newton, R. Kavenagh, J. Olsen, and I. Taylor (eds.), Ecology and conservation of owls. CSIRO Publishing, Collingwood, Victoria, Australia.       pdf

Newton, I. 2001. Studies of the reproduction, longevity and movements of individual animals. Pp. 67-92 in M.C. Press, N.C. Huntly, and S. Levin (eds.), 41st Symposium of the British Ecological Society. Blackwell Science, London.

Newton, I. 2000. Effects of predators on their prey: some generalisations. Pp. 509-518 in R.D. Chancellor and B.-U. Meyburg (eds.), Raptors at risk. World Working Group for Birds of Prey and Owls, London.       pdf

Newton, I., P. Rothery, and R. Frumkin. 2000. Post-fledging behaviour, dispersal and survival in Eurasian Sparrowhawks. Organochlorines in bird of prey eggs: a terrestrial case study. Pp. 211-245 in T. Sparks (ed.), Statistics in ecotoxicology. John Wiley & Sons, New York.

Newton, I., P. Rothery, and R. Frumkin. 1999. Post-fledging behaviour, dispersal and survival in Eurasian Sparrowhawks. In N.J. Adams and R.H. Slotow (eds.), Proceedings of the 22nd International Ornithological Congress, 16-22 August 1998, Durban, SOuth Africa. (CD-rom).

Newton, I., R.F. Shore, I. Wyllie, J.D.S. Birks, and L. Dale. 1999. Empirical evidence of side-effects of rodenticides on some predatory birds and mammals. Pp. 347-367 in D.P. Coward and C.J. Feare (eds.), Advances in vertebrate pest management. Filander Verlag, Fürth, Germany.

Newton, I. 1998. Pollutants and pesticides. Pp. 66-89 in W.J. Sutherland (ed.), Conservation science and action. Blackwell Science, Oxford, UK.

Newton, I. 1998. The role of the individual bird and the individual territory in the population biology of sparrowhawks Accipiter nisus. Pp. 117-129 in R.D. Chancellor, B.-U. Meyburg, and J.J. Ferrero (eds.), Holarctic birds of prey. ADENEX, Barcelona, Spain, and World Working Group on Birds of Prey, Berlin.

Newton, I. 1998. Migration patterns in West Palearctic raptors. Pp. 603-612 in R.D. Chancellor, B.-U. Meyburg, and J.J. Ferrero (eds.), Holarctic birds of prey. ADENEX, Barcelona, Spain and World Working Group on Birds of Prey, Berlin.       pdf

Newton, I., I. Wyllie, and L. Dale. 1997. Mortality causes in British Barn Owls (Tyto alba), based on 1,101 carcasses examined during 1963-1996. Pp. 299-307 in J.R. Duncan, D.H. Johnson, and T.H. Nicholls (eds.), Biology and conservation of owls of the Northern Hemisphere: 2nd International Symposium, February 5-9 1997, Winnipeg, Manitoba. U.S.Department of Agriculture, Forest Service, General Technical Report NC-190, St. Paul, MN.

Newton, I. 1996. Sparrowhawks in conifer plantations. Pp. 191-200 in D. Bird, D. Varland, and J. Negro (eds.), Raptors in human landscapes. Academic Press, London.       pdf

Newton, I., and I. Wyllie. 1996. Monogamy in the sparrowhawk. Pp. 249-267 in J. Black (ed.), Partnerships in birds. Oxford University Press, Oxford, UK.       pdf

Newton, I. 1993. Sparrowhawk Pp. 111-119 in D.W. Gibbons, J.B. Reid, and R.A. Chapman (eds.), The new atlas of breeding birds in Britain and Ireland: 1988-1991. T. & A.D. Poyser, London.

Newton, I. 1992. Birds of prey. Pp. 143-162 in M.J. Crawley (ed.), Natural enemies. Blackwell Scientific Publications, Oxford, UK.

Newton, I. 1991. Concluding remarks. Pp. 637-654 in C.M. Perrins, J.-D. Lebreton, and G.J.M. Hirons (eds.), Bird population studies. Oxford University Press, Oxford, UK.

Newton, I. 1991. Population limitation in birds of prey: a comparative approach. Pp. 3-21 in C.M. Perrins, J.-D. Lebreton, and T.J.M. Hirons (eds.), Bird population studies. Oxford University Press, Oxford, UK.

Marquiss, M., and I. Newton 1990. Pp. 38-42 in M.G.R. Cannell and M.D. Hooper (eds.), The greenhouse effect and terrestrial ecosystems. ITE Research Publication no. 4. HMSO, London.

Newton, I. 1990. The world's rarest raptors. Pp. 88-89 in I. Newton (ed.), Birds of prey. Merehurst Press, London.       pdf

Newton, I. 1989. Introduction. Pp. 1-11 in I. Newton (ed.), Lifetime reproduction in birds. Academic Press, London.

Newton, I. 1990. Wildlife profile: the sparrowhawk. Pp. 920-921 in Discover Scotland. Robert Maxwell, Glasgow, Scotland.

Newton, I. 1989. Synthesis. Pp. 441-469 in I. Newton (ed.), Lifetime reproduction in birds. Academic Press, London.

Newton, I. 1989. Organochlorine insecticides and the sparrowhawk: toxic effects and population trends. Pp. 5-11 in C. Walker and D. Anderson (eds.), Ecotoxicology. Institute of Biology, London.

Newton, I. 1989. The control of sparrowhawk Accipiter nisus nesting densities. Pp. 169-180 in B.-U. Meyburg and R.D. Chancellor (eds.), Raptors in the modern world. World Working Group on Birds of Prey, London.       pdf

Newton, I. 1989. Keynote address: Population limitation in raptors. Pp. 3-12 in B.G. Pendleton (ed.), Proceedings of the Northeast Raptor Management Symposium and Workshop. National Wildlife Federation Scientific and Technical Series no. 12.

Newton, I. 1989. Sparrowhawk. Pp. 279-296 in I. Newton (ed.), Lifetime reproduction in birds. Academic Press, London.       pdf

Newton, I. 1988. Changes in the status of the peregrine in Europe: an overview. Pp. 227-234 in T.J. Cade, J.H. Enderson, C.G. Thelander, and C.M. White (eds.), Peregrine Falcon populations: their management and recovery. The Peregrine Fund, Boise, ID.       pdf

Newton, I. 1988. Population regulation in peregrines: an overview. Pp. 761-770 in T.J. Cade, J.H. Enderson, C.G. Thelander, and C.M. White (eds.), Peregrine Falcon populations: their management and recovery. The Peregrine Fund, Boise, ID.       pdf

Newton, I. 1988. Age and reproduction in the sparrowhawk. Pp. 201-219 in T. Clutton-Brock (ed.), Reproductive success. University of Chicago Press, Chicago, IL.       pdf

Newton, I. 1988. Monitoring of persistent pesticide residues and their effects on bird populations. Pp. 33-45 in C.J.L. Harding (ed.), Britain since 'Silent Spring'. Institute of Biology, London.

Newton, I. 1988. Reintroduction and its relation to the management of raptor populations. Pp. 1-15 in D.K. Garcelon and G.W. Roemer (eds.), Proceedings of an International Symposium on Raptor Reproduction. Institute for Wildlife Studies, Arcata, CA.       pdf

Newton, I., and R.M. Mearns. 1988. Population ecology of peregrines in South Scotland. Pp. 651-665 in T.J. Cade, J.H. Enderson, C.G. Thelander, and C.M. White (eds.), Peregrine Falcon populations: their ecology and management. The Peregrine Fund, Boise, ID.       pdf

Newton, I. 1986. Principles underlying bird numbers in Scottish woodlands. Pp. 121-128 in D. Jenkins (ed.), ITE Symposium no. 17. Institute of Terrestrial Ecology, Abbots Ripton, Huntingon, Cambridge, UK.

Newton, I. 1986. Birds & forestry. Pp. 28-34 in Afforestation and nature conservation interactions. Timber Growers United Kingdom, London.

Newton, I. 1986. The long haul: migration patterns of birds of prey. Pp. 54-55 in P.J.B. Slater (ed.), The Collins encyclopaedia of animal behaviour. Collins, London.

Newton, I. 1985. Birds of prey -- the raptors. Pp. 102-125 in C.M. Perrins and L.A. Middleton (eds.), The encyclopaedia of birds. Allen & Unwin, London.

Newton, I. 1985. Falcon. Pp. 202-203 in B. Campbell and E. Lack (eds.), A dictionary of birds. T & AD Poyser, Calton, UK.

Newton, I. 1984. Report on the discussions of the syndicate on the use of agrochemicals. Pp. 188-190 in D. Jenkins, Agriculture and the environment. Institute of Terrestrial Ecology Symposium no. 13. Institute of Terrestrial Ecology, Cambridge, UK.

Newton, I. 1984. Uses and effects on bird populations of organochlorine pesticides. Pp. 80-88 in D. Jenkins (ed.), Institute of Terrestrial Ecology Symposium no. 13. Institute of Terrestrial Ecology, Cambridge, UK.

Newton, I. 1984. Effects of organochlorine pesticides on birds. Pp. 151-159 in J.M. Mendelsohn and C.W. Sapsford (eds.), Proceedings of the 2nd Symposium on African Predatory Birds. Natal Bird Club, Durban, South Africa.       pdf

Newton, I. 1984. Mortality and population turnover in raptors. Pp. 71-85 in J.M. Mendelsohn and C.W. Sapsford (eds.), Proceedings of the 2nd Symposium on African Predatory Birds. Natal Bird Club, Durban, South Africa.

Newton, I. 1983. The effects of DDT and other organochlorine pesticides on bird populations. P. 720 in 10th International Congress of Plant Protection.

Newton, I. 1983. Birds and forestry. Pp. 21-36 in E.H.M. Harris (ed.), Forestry and conservation. Royal Forestry Society, Tring, UK.

Newton, I. 1981. Mortality factors in wild populations: chairman's introduction. Pp. 141 in J.E. Cooper and A.G. Greenwood (eds.), Recent advances in the study of raptor diseases. Chiron, Keighley, UK.       pdf

Newton, I., and D. Moss. 1981. Factors affecting the breeding of sparrowhawks and the occurrence of their song-bird prey in woodlands. Pp. 125-131 in F.T. Last and A.S. Gardiner (eds.), Forest and woodland ecology: an account of research being done in ITE. ITE Symposium no. 8. Institute of Terrestrial Ecology, Cambridge, UK.

Bogan, J.A., and I. Newton. 1979. The effects of organochlorines on reproduction of British sparrowhawks (Accipiter nisus). Pp. 269-279 in Animals as monitors of environmental pollutants. National Academy of Sciences, Washington, D.C.       pdf

Newton, I. 1978. Population dynamics as a basis for management. Pp. 5-16 in T.G. Geer (ed.), Birds of prey management techniques. British Falconers' Club, Birmingham, UK.       pdf

Newton, I. 1975. Hawks and man. Pp. 127-141 in J. Gooders (ed.), The second bird-watchers' book. David & Charles, Newton Abbot, UK.       pdf

PAPERS & ARTICLES:

Newton, I., M.J. McGrady, and M.K. Oli. 2016. A review of survival estimates for raptors and owls. Ibis 158(2):227-248.

Newton, I. 2016. Problems created by the continuing use of lead ammunition in game hunting. British Birds 109(3):172-179       pdf

Ferrer, M., I. Newton, and R. Muriel. 2013. Rescue of a small declining population of Spanish Imperial Eagles. Biolgical Conservation 159:32-36

Marquiss, M., I. Newton, K.A. Hobson, and Y. Kolbeinsson. 2012. Origins of irruptive migration by Common Crossbills Loxia curvirostra into northeastern Europe revealed by stable isotope analysis. Ibis 154:400-409.

Burnham, K.K., and I. Newton. 2011. Seasonal movements of Gyrfalcons Falco rusticolus includes extensive periods at sea. Ibis 153:468-484.       pdf

Meyburg, B.-U., and I. Newton. 2011. Obituary: R.D. (Robin) Chancellor (1921-2010). British Birds 104:42-43.

Newton, I., and A. Dawson. 2011. Seasonal changes in moult, body mass and reproductive condition in siskin Carduelis spinus exposed to daylength regimes simulating different latitudes. Journal of Avian Biology 42:22-28.

Farmer, C.J., K. Safi, D.R. Barber, I. Newton, M. Martell, and K.L. Bildstein. 2010. Efficacy of migration counts for monitoring continental populations of raptors: an example using the Osprey (Pandion haliaetus). Auk 127:863-870.

Burnham, K.K., Burnham, W.A., and I. Newton. 2009. Gyrfalcon Falco rusticolus post-glacial colonisation and extreme long-term use of nest-sites in Greenland. Ibis 151:514-542.        pdf

Ferrer, M., I. Newton, and M. Pandolfi. 2009. Small populations and offspring sex-ratio deviations in eagles. Conservation Biology 23:1017-1025.       pdf

Newton, I. 2009. Moult and plumage. Ringing & Migration 24:220-226.       pdf

Newton, I., and B. Little. 2009. Assessment of wind-farm and other bird casualties from carcasses found on a Northumbrian beach over an 11-year period. Bird Study 56:158-167.       pdf

Newton, I., and P. Rothery. 2009. Timing and duration of moult in adult European Goldfinches. Bird Study 56:282-288.

Rothery, P., I. Newton, and B. Little. 2009. Observations of seabirds at offshore wind turbines near Blyth in Northeast England. Bird Study 56:1-14.        pdf

Young, G.R., A. Dawson, I. Newton, and L. Walker. 2009. The timing of gonadal development and moult in three raptors with different breeding seasons: effects of gender, age and body condition. Ibis 151:654-666.        pdf

Ferrer, M., I. Newton, and E. Casado. 2008. Density dependence hypotheses and the distribution of fecundity. Journal of Animal Ecology 77:341-345.

Green, R.E., Hunt, W.G., Parish, C.N., and I. Newton. 2008. Effectiveness of action to reduce exposure of free-ranging California Condors in Arizona and Utah to lead from spent ammunition. PLoS ONE 3:e4022; doi:10.1371/journal.pone.0004022,       pdf

Kirby, J.S., A.J. Stattersfield, S.H.M. Butchart, M.I. Evans, R.F.A. Grimmett, V.R. Jones, J. O'Sullivan, G.M. Tucker, and I. Newton. 2008. Key conservation issues for migratory land- and waterbird species on the world's major flyways. Bird Conservation International 18:S49-S73.       pdf

Marquiss, M., K.A. Hobson, and I. Newton. 2008. Stable isotope evidence for different regional source areas of Common Crossbill Loxia curvirostra irruptions into Britain. Journal of Avian Biology 39:30-34.       pdf

Newton, I. 2008. Density dependence hypotheses and the distribution of fecundity. Journal of Animal Ecology 77:341-345.       pdf

Newton, I. 2008. Highlights from a long-term study of sparrowhawks. British Birds 101:607-623       pdf

Sergio, F., I. Newton, and L. Marchesi. 2008. Top predators and biodiversity: much debate, few data. Journal of Applied Ecology 45:992-999.       pdf

Newton I. 2007. Population limitation in birds: the last 100 years. British Birds 100:518-539.       pdf

Newton, I. 2007. Weather-related mass-mortality events in migrants. Ibis 149:453-467.       pdf

Ferrer, M., I. Newton, and E. Casado. 2006. How to test different density-dependent fecundity hypotheses in an increasing or stable population. Journal of Animal Ecology 75:111-117.       pdf

Newton, I. 2006. Advances in the study of irruptive migration. Ardea 93:433-460.       pdf

Newton, I. 2006. Derek Almey Ratcliffe (1929-2005). Ibis 149:392.394.       pdf

Newton, I. 2006. Can conditions experienced during migration limit the population levels of birds? Journal of Ornithology 147:146-166. DOI:10.1007/s10336-006-0058-4.       pdf

Newton, I. 2006. Movement patterns of Common Crossbills Loxia curvirostra in Europe. Ibis 148:782-788.       pdf

Newton, I., K.A. Hobson, A.D. Fox, and M. Marquiss. 2006. An investigation into the provenance of Northern Bullfinches Pyrrhula p. pyrrhula found in winter in Scotland and Denmark. Journal of Avian Biology 37:431-435.       pdf

Rutz, C., MJ. Whittingham, and I. Newton. 2006. Age-dependent diet choice in an avian top predator. Proceedings of the Royal Society B, Biological Sciences 273:579-586.       pdf

Sergio, F., I. Newton, , L. Marchesi, and P. Pedrini. 2006. Ecological justified charisma: preservation of top predators delivers biodiversity conservation. Journal of Applied Ecology 43:1049-1055.       pdf

Newton, I., and P. Rothery. 2005. The timing, duration and pattern of moult and its relationship to breeding in a population of the European Greenfinch Carduelis carduelis Ibis 147:667-679.       pdf

Sergio, F., I. Newton, and L. Marchesi. 2005. Top predators and biodiversity. Science 436:192.       pdf

Dawson, A., and I. Newton. 2004. Use and validation of a molt score index corrected for primary-feather mass. Auk 121:372-379.       pdf

Green, R.E., I. Newton, S. Schultz, A.A. Cunningham, M. Gilbert, D.J. Pain, and V. Prakash. 2004. Diclofenac poisoning as a cause of vulture population declines across the Indian subcontinent. Journal of Applied Ecology 41:793-800.       pdf

Newton, I. 2004. Population limitation in birds. Ibis 146:197-226.       pdf

Newton, I. 2004. The recent declines of farmland bird populations in Britain: an appraisal of causal factors and conservation actions. Ibis 146:579-600.       pdf

Proffitt, F.M., I. Newton, J.D. Wilson, and G.M. Siriwardena. 2004. Bullfinch Pyrrhula pyrrhula breeding ecology in lowland farmland and woodland: comparisons across time and habitat. Ibis 146 (suppl.):78-86.       pdf

Sergio, F., and I. Newton. 2003. Occupancy as a measure of territory quality. Journal of Animal Ecology 72:857-865.       pdf

Newton, I., and P. Rothery. 2002. Age-related trends in different aspects of the breeding performance of individual female Eurasian Sparrowhawks (Accipiter nisus). Auk 119:735-748.       pdf

Newton, I. 2001. (Review of) Raptor migration in Israel and the Middle East: a summary of 30 years of field research, by Hadoram Shirihai. Journal of Raptor Research 35:171.       pdf

Newton, I. 2001. Causes and consequences of breeding dispersal in the sparrowhawk. Ardea 89 (special issue):43-154.       pdf

Newton, I., and L. Dale. 2001. A comparative analysis of the avifaunas of different zoogeographical regions. Journal of Zoology 254:207-218.       pdf

Rothery, P., I. Wyllie, I. Newton, A. Dawson, and D. Osborn. 2001. The timing and duration of moult in adult starlings Sturnus vulgaris in east-central England. Ibis 143:435-441.       pdf

Newton, I., and P. Rothery. 2000. Post-fledging recovery and dispersal of ringed Eurasian Sparrowhawks Accipiter nisus. Journal of Avian Biology 31:226-236.

Newton, I., and P. Rothery. 2001. Estimation and limitation of numbers of floaters in a Eurasian Sparrowhawk population. Ibis 143:442-449.       pdf

Rothery, P., and I. Newton. 2000. A simple method for estimating timing and duration of avian primary moult using field data. Ibis 144:526-528.       pdf

Sibly, R.M., I. Newton, and C.H. Walker. 2000. Effects of dieldrin on population growth rates of sparrowhawks 1963-1986. Journal of Applied Ecology 37:540-546.       pdf

Thirgood, S.J., S.M. Redpath, D.T. Haydon, P. Rothery, I. Newton, and P.J. Hudson. 2000. Habitat loss and raptor predation: disentangling long- and short-term causes of Red Grouse declines. Proceedings of the Royal Society of London B 267:651-656.       pdf

Thirgood, A., S. Redpath, I. Newton, and P. Hudson. 2000. Raptors and Red Grouse: conservation conflicts and management solutions. Conservation Biology 14:95-104.       pdf

Erry, B.V., M.R. Macnair, A.A. Meharg, R.F. Shore, and I. Newton. 1999. Arsenic residues in predatory birds from an area of Britain with naturally and anthropogenically elevated arsenic levels. Environmental Pollution 106:91-95.       pdf

Newton, I. 1999. An alternative approach to the measurement of seasonal trends in bird breeding success: a case study of the Bullfinch Pyrrhula pyrrhula, Journal of Animal Ecology 68:698-707.       pdf

Newton, I. 1999. In memoriam: V.C. Wynne-Edwards, 1906-1997. Auk 116:815-816.       pdf

Newton, I., L. Dale, and B. Little. 1999. Trends in organochlorine and mercurial compounds in the eggs of British Merlins Falco columbarius. Bird Study 45:356-362.       pdf

Newton, I., I. Wyllie, and L. Dale. 1999. Trends in the numbers and mortality patterns of sparrowhawks (Accipiter nisus) and kestrels (Falco tinnunculus) in Britain, as revealed by carcass analysis. Journal of Zoology 247:139-147.

Walker, C.H., and I. Newton. 1999. Effects of cyclodiene insecticides on raptors in Britain -- correction and updating by an earlier paper by Walker and Newton. Ecotoxicology 7:185-189.

Wyllie, I., and I. Newton. 1999. Use of carcasses to estimate the proportions of female sparrowhawks and kestrels which breed in their first year of life. Ibis 141:504-506.       pdf

Newton, I., and P. Rothery. 1998. Age-related trends in the breeding success of individual female sparrowhawks Accipiter nisus. Ardea 86:21-31.

Walker, C.H., and I. Newton. 1998. Effects of cyclodiene insecticides on the sparrowhawks (Accipiter nisus) in Britain -- a reappraisal of the evidence. Ecotoxicology 7:185-189.       pdf

Newton, I., L. Dale, and P. Rothery. 1997. Apparent lack of impact of sparrowhawks on the breeding densities of some woodland songbirds. Bird Study 44:129-135.       pdf

Newton, I., and C.M. Perrins. 1997. Sparrowhawks and songbirds. Birds 16:65-68.       pdf

Newton, I., and P. Rothery. 1997. Senescence and reproductive value in sparrowhawks. Ecology 78:1000-1008.       pdf

Newton, I., P. Rothery, and I. Wyllie. 1997. Age-related survival in female sparrowhawks Accipiter nisus. Ibis 139:25-30.       pdf

Newton, I. and L.C. Dale. 1996. Bird migration at different latitudes in eastern North America. Auk 113:626-635       pdf

Newton, I., P.E. Davis, and D. Moss. 1996. Distribution and breeding of Red Kites Milvus milvus in relation to afforestation and other land-use in Wales. Journal of Applied Ecology 33:210-224.       pdf

Hartley, R.R., I. Newton, and M. Robertson. 1995. Organochlorine residues and eggshell thinning in the Peregrine Falcon Falco peregrinus minor in Zimbabwe. Ostrich 66:69-73.       pdf

Newton, I. 1995. Relationship between breeding and wintering ranges in Palearctic-African migrants. Ibis 137:241-249.       pdf

Newton, I. 1995. The contribution of some recent research on birds to ecological understanding. Journal of Animal Ecology 64:675-696.       pdf

Pain, D.J., J. Sears, and I. Newton. 1995. Lead concentrations in birds of prey in Britain. Environmental Pollution 87:173-180.

Newton, I. 1994. The role of nest sites in limiting numbers of hole-nesting birds. Biological Conservation 70:265-276.       pdf

Newton, I. 1994. Experiments on the limitation of bird breeding densities: a review. Ibis 136:397-411.       pdf

Newton, I. 1994. Current population levels of diurnal raptors in Britain. Raptor 1993/4:17-27.       pdf

Newton, I., I. Wyllie, A. Gray, and C.V. Eadsworth. 1994. The toxicity of the rodenticide flucoumafen to Barn Owls and its elimination via pellets. Pesticide Science 41:187-193.       pdf

Newton, I., P.E. Davis, and D. Moss. 1994. Philopatry and population growth of Red Kites in Wales. Proceedings of the Royal Society of London B 257:317-323.       pdf

Wyllie, I., and I. Newton. 1994. Latitudinal variation in the body size of sparrowhawks Accipiter nisus within Britain. Ibis 136:434-440.       pdf

Newton, I.. 1993. Age and site fidelity in female sparrowhawks. Animal Behaviour 46:161-168.       pdf

Newton, I. 1993. Predation and limitation of bird numbers. Current Ornithology 1:143-194.       pdf

Newton, I., I. Wyllie, and A. Asher. 1993. Long-term trends in organochlorine and mercury residues in some predatory birds in Britain. Environmental Pollution 79:143-151.

Newton, I., I. Wyllie, and P. Rothery. 1993. Annual survival of sparrowhawks Accipiter nisus breeding in three areas of Britain. Ibis 135:49-60.       pdf

Newton, I. 1992. A 20-year study of sparrowhawks in Eksdale. Scottish Birds 16:231-235.       pdf

Newton, I. 1992. Experiments on the limitation of bird numbers by territorial behaviour. Biological Reviews 67:129-173.

Newton, I., and I. Wyllie. 1992. Fidelity to nesting territory among sparrowhawks in three areas. Journal of Raptor Research 26:108-114.       pdf

Newton, I., and I. Wyllie. 1992. Recovery of a sparrowhawk population in relation to declining pesticide contamination. Journal of Applied Ecology 29:476-484.       pdf

Newton, I., I. Wyllie, and A. Asher. 1992. Mortality from the pesticides aldrin and dieldrin in British sparrowhawks and kestrels. Ecotoxicology 1:31-34.

Newton, I. 1991. Habitat variation and population regulation in sparrowhawks. Ibis 133 (Supplement):46-88.       pdf

Newton, I. 1991. The role of recruitment in population regulation. Proceedings of the International Ornithological Congress 21:1689-1699.

Newton, I. 1991. Long-term monitoring of organochlorine and mercury residues in some predatory birds in Britain. Proceedings of the International Ornithological Congress 21:2487-2493.

Newton, I., and A.E. Galbraith. 1991. Organochlorines and mercury in Golden Eagle Aquila chrysaetos eggs from Scotland. Ibis 133:115-120.

Newton, I., and M. Marquiss. 1991. Removal experiments and the limitation of breeding density in sparrowhawks. Journal of Animal Ecology 60:535-544.

Wyllie, I., and I. Newton. 1991. Demography of an increasing population of sparrowhawks. Journal of Animal Ecology 60:749-766.       pdf

Ashford, R.W., I. Wyllie, and I. Newton. 1990. Leucocytozoon toddi in British sparrowhawks, Accipiter nisus: observations on the dynamics of infection. Journal of Natural History 24:1101-1107.

Newton, I., J.B. Bogan, and M.B. Haas. 1989. Organochlorine and mercury in the eggs of British peregrines Falco peregrinus. Ibis 131:355-376.

Newton, I., P.E. Davis, and J.E. Davis. 1989. Age of first breeding, dispersal and survival of Red Kites Milvus milvus in Wales. Ibis 131:16-21.

Mearns, R., and I. Newton. 1988. Factors affecting breeding success of peregrines in South Scotland. Journal of Animal Ecology 57:903-916.       pdf

Newton, I. 1988. A key factor analysis of a sparrowhawk population. Oekologia 76:588-596.       pdf

Newton, I. 1988. Determination of critical pollutant levels in wild populatons, with examples from organochlorine insecticides in birds of prey. Environmental Pollution 55:29-40.

Newton, I. 1988. (Plenary address) Individual performance in sparrowhawks: the ecology of two sexes. Proceedings of the International Ornithological Congress 19:125-154.

Newton, I. 1988. Insecticide and PCB update. Bokmakierie 40:53.

Newton, I., and M.B. Haas. 1988. Pollutants in Merlin eggs and their effects on breeding. British Birds 81:258-269.       pdf

Newton, I. 1987. Twenty-five years on. Scottish Bird News 8:1.

Walker, C.H., I. Newton, S.D. Hallam, and M.J.J. Ronis. 1987. Activities and toxicological significance of hepatic microsomal enzymes of the kestrel (Falco tinnunculus) and sparrowhawk (Accipiter nisus). Comparative Biochemistry and Physiology C 86:379-382.

Newton, I. 1986. Future prospects for raptors in Europe. Pp. 4-10 in S.E. Senner, C.M. White, and J.R. Parrish (eds.), Raptor conservation in the next 50 years. Raptor Research Reports no. 5.

Newton, I., J.A. Bogan, and P. Rothery. 1986. Trends and effects of organochlorine compounds in sparrowhawk eggs. Journal of Applied Ecology 23:461-478.       pdf

Newton, I., and M. Marquiss. 1986. Population regulation in sparrowhawks. Journal of Animal Ecology 55:463-480.       pdf

Newton, I., E. Meek, and B. LIttle. 1986. Population and breeding of Northumbrian Merlins. British Birds 79:155-170.       pdf

Newton, I., and D. Moss. 1986. Post-fledgling survival of sparrowhawks Accipiter nisus in relation to mass, brood-size and brood composition at fledging. Ibis 128:73-80.

Newton, I., I. Wyllie, and R.M. Mearns. 1986. Spacing of sparrowhawks in relation to food supply. Journal of Animal Ecology 55:361-370.       pdf

Newton, I. 1985. Recent developments in the study of raptor populations. Proceedings of the International Ornithological Congress 17:694-704.

Newton, I. 1985. Lifetime reproductive output of female sparrowhawks. Journal of Animal Ecology 54:241-253.       pdf

Mearns, R., and I. Newton. 1984. Turnover and dispersal in a peregrine Falco peregrinus population. Ibis 126:347-355.

Newton, I. 1984. Upland forestry brings wildlife gains. Economic Forestry Group Magazine 1984:8-10.

Newton, I. 1984. Raptors in Britain -- a review of the last 150 years. BTO News 131:6-7.

Newton, I., and M.B. Haas. 1984. The return of the sparrowhawk. British Birds 77:47-70.       pdf

Newton, I., and M. Marquiss. 1984. Seasonal trend in the breeding performance of sparrowhawks. Journal of Animal Ecology 53:809-829.       pdf

Newton, I., E.R. Meek, and B. Little. 1984. Breeding season foods of Merlins Falco columbarius in Northumbria. Bird Study 31:49-56.       pdf

Newton, I., and I. Wyllie. 1984. Study of an expanding sparrowhawk population. Annual Report of the Institute of Terrestrial Ecology 1983:67-68.

Bogan, J.A., and I. Newton. 1983. The effects of organochlorine compounds on British birds-of-prey. Veterinary Research Communications 7:119-124.

Lakhani, K.H., and I. Newton. 1983. Estimating age-specific bird survival rates from ring recoveries -- can it be done? Journal of Animal Ecology 52:83-91.       pdf

Newton, I., and M. Marquiss. 1983. Dispersal of sparrowhawks between birthplace and breeding place. Journal of Animal Ecology 52:463-477.       pdf

Newton, I., M. Marquiss, and P. Rothery. 1983. Age structure and survival in a sparrowhawk population. Journal of Animal Ecology 52:591-602.       pdf

Newton, I., M. Marquiss, and A. Village. 1983. Weights, breeding, and survival in European Sparrowhawks. Auk 100:344-354.        pdf

Newton, I. 1982. Of mice and men... Naturopa 40:7-8.

Marquiss, M., and I. Newton. 1982. A radio-tracking study of the ranging behaviour and dispersion of European Sparrowhawks (Accipiter nisus). Journal of Animal Ecology 51:111-133.       pdf

Marquiss, M., and I. Newton. 1982. The goshawk in Britain. British Birds 75:243-260.

Newton, I., A.A. Bell, and I. Wyllie. 1982. Mortality of sparrowhawks and kestrels. British Birds 75:195-204.       pdf

Newton, I., A.A. Bell, and I. Wyllie. 1982. Mortality of sparrowhawks and kestrels: reply to letter. British Birds 75:424-425.

Newton, I., J. Bogan, E. Meek, and B. Little. 1982. Organochlorine compounds and shell-thinning in British Merlins Falco columbarius. Ibis 124:328-335.

Newton, I., P.E. Davis, and J.E. Davis. 1982. Ravens and buzzards in relation to sheep-farming and forestry in Wales. Journal of Applied Ecology 19:681-706.       pdf

Newton, I., and M. Marquiss. 1982. Eye colour, age and breeding performance in sparrowhawks (Accipiter nisus). Bird Study 29:195-200.       pdf

Newton, I., and M. Marquiss. 1982. Moult in the sparrowhawk. Ardea 70:163-172.       pdf

Newton, I., and M. Marquiss. 1982. Fidelity to breeding area and mate in sparrowhawks (Accipiter nisus). Journal of Animal Ecology 51:327-341.       pdf

Newton, I., and M. Marquiss. 1982. Food predation and breeding season in sparrowhawks (Accipiter nisus). Journal of Zoology 197:221-240.       pdf

Davis, P.E., and I. Newton. 1981. Population and breeding of Red Kites in Wales over a 30-year period. Journal of Animal Ecology 50:759-772.       pdf

Kenward, R.E., M. Marquiss, and I. Newton. 1981. What happens to goshawks trained for falconry? Journal of Wildlife Management 45:802-806.       pdf

Newton, I. 1981. Der Sperber und die Pestizide - ein Beitras von den Britischen Inseln. Ökologie Vögel 3 (Sonderheft):207-219. (In German)       pdf

Newton, I., J. Bogan, and M. Marquiss. 1981. Organochlorine contamination and age in sparrowhawks. Environmental Pollution A 25:155-160.

Newton, I., P.E. Davis, and D. Moss. 1981. Distribution and breeding of Red Kites in relation to land-use in Wales. Journal of Applied Ecology 18:173-186.       pdf

Newton, I., S. Dobson, D. Osborn, and R.E. Kenward. 1981. Ergebnisse der Biocid-Forschung aus England und anderen Landern. Ökologie Vögel 3 (Sonderheft):29-32.

Newton, I., and M. Marquiss. 1981. Effects of additional food on laying dates and clutch size of sparrowhawks. Ornis Scandinavica 12:224-229.       pdf

Newton, I., M. Marquiss, and D. Moss. 1981. Age and breeding in sparrowhawks. Journal of Animal Ecology 50:839-853.       pdf

Newton, I., J.E. Robson, and D.W. Yalden. 1981. Decline of the Merlin in the Peak District. Bird Study 28:225-234.       pdf

Newton, I. 1980. Densities and breeding success of sparrowhawks in Britain. Limosa 53:140-141.       pdf

Newton, I. 1979. Distances between birthplace and breeding place in sparrowhawks and other European raptors. Raptor Research 13:97-101.       pdf

Newton, I. 1979. Effects of human persecution on European raptors. Raptor Research 13:65-78.       pdf

Newton, I. 1979. The wild Merlin. Falconer 7:164-167.       pdf

Newton, I., and M. Marquiss. 1979. Sex ratio among nestlings of the European Sparrowhawk. American Naturalist 113:309-315.       pdf

Newton, I., M. Marquiss, and D. Moss. 1979. Habitat, female age, organo-chlorine compounds and breeding of European Sparrowhawks. Journal of Applied Ecology 16:777-793.       pdf

Love, J.A., M.E. Ball, and I. Newton. 1978. White-tailed Eagles in Britain and Norway. British Birds 71:475-481.       pdf

Newton, I. 1978. Feeding and development of sparrowhawk Accipiter nisus nestlings. Journal of Zoology 184:465-488.       pdf

Newton, I., and J. Bogan. 1978. The role of different organo-chlorine compounds in the breeding of British sparrowhawks. Journal of Applied Ecology 15:105-116.       pdf

Newton, I., E.R. Meek, and B. Little. 1978. Breeding ecology of the Merlin in Northumberland. British Birds 71:376-398.       pdf

Bogan, J., and I. Newton. 1977. Redistribution of DDE in sparrowhawks during starvation. Bulletin of Environmental Contaminaton and Toxicology 18:317-321.       pdf

Newton, I. 1977. Recent research on sparrowhawks. Scottish Wildlife 13:15-19.

Newton, I. 1977. Breeding strategies in birds of prey. Living Bird 16:51-82.       pdf

Newton, I., M. Marquiss, D.N. Weir, and D. Moss. 1977. Spacing of sparrowhawk nesting territories. Journal of Animal Ecology 46:425-441.       pdf

Newton, I. 1976. Raptor research and conservation during the last five years. Canadian Field-Naturalist 90:225-227       pdf

Newton, I. 1976. Population limitation in diurnal raptors. Canadian Field-Naturalist 90:274-300.

Newton, I. 1976. Breeding of sparrowhawks (Accipiter nisus) in different environments. Journal of Animal Ecology 45:831-849.       pdf

Newton, I., and M. Marquiss. 1976. Occupancy and success of nesting territories in the European Sparrowhawk. Raptor Research 10:65-71.       pdf

Newton, I. 1975. Movements and mortality of British sparrowhawks. Bird Study 22:35-43.       pdf

Newton, I. 1974. Changes attributed to pesticides in the nesting success of the sparrowhawk in Britain. Journal of Applied Ecology 11:95-101.       pdf

Newton, I., and J. Bogan. 1974. Organochlorine residues, eggshell thinning and hatching success in British sparrowhawks. Nature 249:582-583.       pdf

Newton, I. 1973. Egg-breakage and breeding failure in British Merlins. Bird Study 20:241-244.

Newton, I. 1973. Studies of sparrowhawks. British Birds 66:271-278.       pdf

Newton, I. 1973. Success of sparrowhawks in an area of pesticide usage. Bird Study 20:1-8.

Newton, I. 1972. Birds of prey in Scotland: some conservation problems. Scottish Birds 7:5-23.       pdf

Newton, I. 1967. The adaptive radiation and feeding ecology of some British finches. Ibis 109:33-96.       pdf

Newton, I. 1966. The moult of the Bullfinch Pyrrhula pyrrhula. Ibis 108:41-67.       pdf

Newton, I. 1964. The breeding biology of the Chaffinch. Bird Study 11:47-68.       pdf



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