Family Hawks, Eagles (Accipitridae)

Least Concern

Long-winged Harrier (Circus buffoni)


Taxonomy

French: Busard de Buffon German: Weißbrauenweihe Spanish: Aguilucho de Azara
Taxonomy:

Falco Buffoni

J. F. Gmelin

, 1788,

north-eastern Brazil

.

Formerly used name C. brasiliensis has page priority, but unidentifiable. Monotypic.

Distribution:

Colombia E to the Guianas, Trinidad, and S to Brazil, Paraguay, N & C Argentina and Uruguay; non-breeding visitor in Bolivia and N Brazil; also recorded in E Panama#R.

Descriptive notes

46–60 cm; male 390–464 g, female 400–645 g; wingspan 119–155 cm. Female averages 4% larger, but largest female can be 30% larger than smallest male;... read more

Voice

Apparently only very vocal in nest defence when gives a rapid wader-like chattering; plaintive... read more

Habitat

Lowland tropical zone, in open fields including cultivated areas such as wheat, rice fields,... read more

Food and feeding

Birds (both aquatic and terrestrial including various smaller Rallidae), reptiles (especially lizards), frogs and small mammals (including... read more

Breeding

Eggs in Jun, Trinidad; possible nest building in Aug, Colombia; season Sept–Jan, C Argentina, and at least Dec–Jan, Surinam.... read more

Movements

Migratory, at least in southernmost populations; insufficient data to assess status (resident,... read more

Status and conservation

Not globally threatened (Least Concern). CITES II. Widespread, but apparently rather local. Very poorly known. Rare and local in E Brazil, more frequent in S Brazil. In... read more

Recommended citation

Bierregaard, R.O., Jr & Kirwan, G.M. (2017). Long-winged Harrier (Circus buffoni). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/53026 on 24 October 2017).