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Philippine Honey Buzzard
Pernis steerei

Status: Lower risk

Population Trend: Declining.

Other Names: Philippine Honey-buzzard, Steere's Honey-buzzard.


Pernis steerei
click to enlarge
Distribution: Indomalayan. PHILIPPINES. more....

Subspecies: 2 races. P.s. steerei: Southern PHILIPPINES west and south of the Bernardino Strait between Luzon and Samar; P.s. winkleri: Northern PHILIPPINES east and north of the Bernardino Strait. more....

Taxonomy: The genus Pernis is a primitive accipitrid with no close relations to Buteo (Seibold and Helbig 1995). Wink (1995) found that it clusters with the Neophron/Gypaetus clade of Old World vultures. Based on molecular sequences of the cytochrome b gene, Gamauf and Haring (2004) found that the cuckoo hawks, Aviceda, form a sister group to Pernis, but their analysis indicated that Henicopernis and the Old World vultures, Gypaetus< and Neophron appear only distantly related to Pernis. These authors also recommended separating the Philippine honey-buzzard populations formerly included as a part of P. celebensis as a full species. Their molecular findings coincide with obvious morphological differences, e.g., the Philippine birds are pale and crested, while the Sulawesi populations of P. celebensis are colorful and lack a crest. more....

Movements: Probably non-migratory.

Habitat and Habits: Occurs in lowland primary rainforests or secondary forests selectively logged 2-3 decades ago up to 1,400 m (Gamauf and Preleuthner 1998). Kennedy et al. (2000) similarly described the habitat as lowland forests and forest edges, extending up into 1,500 m in submontane forest.

Food and Feeding Behavior: Feeds on adult insects and their larvae, often attacking bee nests and termite mounds to obtain adults and grubs (Kennedy e al. 2000).

Breeding: Nests and eggs have not been described, but breeding has been noted in February (Kennedy et al. 2000).

Conservation: Gamauf and Preleuthener (1998) recommended that this new species be classified as Vulnerable, based on its small population and threats from habitat loss. However, due to its large range most organizations list this as a species of "Least Concern".

Important References: 
Clark, W.S. 1994. Barred Honey-buzzard. P. 112 in del Hoyo, J., A.
  Elliott, and J. Sargatal (eds.), Handbook of birds of the world. Vol. 2. New
  World vultures to guineafowl. Lynx Edicions, Barcelona, Spain.
Gamauf, A., and E. Haring. 2004. Molecular phylogeny and biogeography of
  honey-buzzards (genera Pernis and Henicopernis). Journal of
  Zoological Systematics and Evolutionary Research 42:145-153.
Gamauf, A., and M. Preleuthner. 1998. A new taxon of the Barred
  Honeybuzzard Pernis celebensis from the Philippines. Bulletin of the British
  Ornithologists' Club 118:90-101.
Gewers, G., E. Curio, and S.H. Hembra. 2006. First observation of an
  advertisement display flight of 'Steere's Honey-buzzard' Pernis (celebensis)
  steerei
on Panay, Philippines. Forktail 22:163-165.
Kennedy, R.S., P.C. Gonzales, E.C. Dickinson, H.C. Miranda, Jr., and T.H.
  Fisher.
2000. A guide to the birds of the Philippines. Oxford University
  Press, Oxford, UK.
Vaurie, C., and D. Amadon. 1962. Notes on the honey buzzards of eastern
  Asia. American Museum Novitates 2111.
Wink, M. 1995. Phylogeny of Old and New World vultures (Aves: Accipitridae
  and Cathartidae) inferred from nucleotide sequences of the mitochondrial
  cytochrome b gene. Verlag der Zeitschrift für Naturforschung 50c:868-882.

Current Research: This species account is not yet completed.

Researchers:
Gamauf, Anita

Last modified: 8/3/2015

Recommended Citation: Global Raptor Information Network. 2017. Species account: Philippine Honey Buzzard Pernis steerei. Downloaded from http://www.globalraptors.org on 25 Feb. 2017








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