Family Hawks, Eagles (Accipitridae)

Least Concern

Long-winged Harrier (Circus buffoni)


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

Falco Buffoni

J. F. Gmelin

, 1788,

north-eastern Brazil


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


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


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


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


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


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. (2020). 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 on 24 February 2020).