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Slaty-backed Forest Falcon
Micrastur mirandollei

Status: Lower risk

Population Trend: Unknown.

Other Names: Mirandolle's Forest Falcon, Slaty-backed Forest-falcon.


Micrastur mirandollei
click to enlarge
Distribution: Neotropical. Caribbean COSTA RICA and PANAMA to central COLOMBIA, southern VENEZUELA, and the Guianas south to northern BOLIVIA and central and southeastern BRAZIL. more....

Subspecies: Monotypic. more....

Taxonomy: 

Movements: Probably non-migratory.

Habitat and Habits: Unlike the closely related Collared Forest Falcon, this species inhabits the interior of undisturbed lowland wet forest and adjacent late second-growth. In French Guiana, it is the dominant canopy-inhabiting Micrastur in primary mature forest and is also found in some coastal forest patches (Thiollay 2007). more....

Food and Feeding Behavior: Preys mostly on birds, but also on lizards and snakes. Typically hides in dense cover and dashes out to attack prey, pursuing it in air and on ground. Smith (1969) auggested that in Panama the congeneric M. mirandollei and M. semitorquatus both deliberately emit high-pitched vocalizations to attract avian prey, and he was able to attract mobbing passerines to speakers by playing the calls of these forest falcons. In turn, these forest falcons are attracted to the sounds nmade by excited birds (Slud 1964, Wetmore 1965). more....

Breeding: No information. Ecuadorian nests purportedly of this species (Melo and de Vries 2001, de Vries 2002) probably refer instead to an Accipiter species (Thorstrom 2002).

Conservation: Relatively widespread, but invariably reported as rare and poorly known, perhaps in part because it is easily overlooked and confused with other species. Categorized globally as a species of "Least Concern" by BirdLife International.

Important References: 
Bierregaard, R.O. 1994. Slaty-backed Forest-falcon. P. 254 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.
de Vries, T., and C. Melo. 2000. First nesting record of the nest of a
  Slaty-backed Forest-falcon (Micrastur mirandollei) in Yasuni
  National Park, Ecuadorian Amazon. Journal of Raptor Research 34:149-150.
de Vries, T., and C. Melo. 2002. Micrastur or Accipiter, that is the
  question. Journal of Raptor Research 36:337.
Ferguson-Lees, J., and D.A. Christie. 2001. Raptors of the world. Houghton
  Mifflin, Boston, MA.
Friedmann, H. 1948. Mirandolle's Forest-falcon. Smithsonian Miscellaneous
  Collections 111:1-4.
Smith, N. 1969. Provoked release of mobbing -- a hunting technique of
  Micrastur falcons. Ibis 111:241-243.
Thorstrom, R. 2002. Comments on the first nesting record of the nest of a
  Slaty-backed Forest-falcon (Micrastur mirandollei) in the
  Ecuadorian Amazon. Journal of Raptor Research 36:335-336.
Valdez, U. 2007. (Abstract) Abundance and movement patterns of
  forest-falcons (Micrastur) in lowland Amazonian rainforest of
  southeastern Peru. Pp. 351-352 in K.L. Bildstein, D.R. Barber, and A.
  Zimmerman (eds.), Neotropical ornithology. Hawk Mountain Sanctuary,
  Orwigsburg, PA.
more....

Sites of Interest:
Xeno-canto
Vocalizations.
VIREO
Slaty-backed Forest Falcon photos.
Aves de Rapina do Brasil
Species account with emphasis on Brasil.

Researchers:
Gómez, César
Quirós Bazán, Norman
Riba-Hernández, Laura
Valdez, Ursula
Whittaker, Andrew

Last modified: 12/22/2009

Recommended Citation: Global Raptor Information Network. 2014. Species account: Slaty-backed Forest Falcon Micrastur mirandollei. Downloaded from http://www.globalraptors.org on 25 Apr. 2014








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