Grey-backed Hawk (Leucopternis occidentalis) - HBW 2, p. 170
French: Buse à dos gris
Spanish: Busardo Dorsigrís
Taxonomy: Leucopternis occidentalis Salvin, 1876, western Ecuador.
Has been considered a race of L. albicollis, to which it is closely allied; forms superspecies with L. albicollis and L. polionota. Monotypic.
Distribution: W Ecuador and adjacent NW Peru. Single record from E Andean slope now questioned by its authors.
- Endangered Enlarge map
Locality Buenaventura Reserve, El Oro Province, Ecuador
Dubi Shapiro 5 February 2009 2 years ago 4.7
Locality Buenaventura Reserve, El Oro Province, Ecuador (Monotypic species)
Dusan M. Brinkhuizen 13 August 2011 3 years ago 4.2
adult in flight
Locality Manabí Province, Ecuador (Monotypic species)
Dusan M. Brinkhuizen 18 February 2008 4 years ago 3.7
Call of immature bird Locality Machalilla National Park, Manabí Province, Ecuador
Peter Boesman 30 December 1993 50 weeks ago 3.5
Call of adult Locality Piñas, El Oro Province, Ecuador
Peter Boesman 22 December 1993 50 weeks ago 3.5
call in flight (2x) Locality Jocotoco Foundation’s Canandé Station, Esmeraldas Province, Ecuador
Dusan M. Brinkhuizen 23 September 2009 4 years ago 2.5