IUCN threat status:

Vulnerable (VU)

Distribution

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Range Description

Sporophila falcirostris is rare in the Atlantic forest of south-east Brazil, east Paraguay and north-east Argentina. In Brazil, recent records are concentrated in Rio de Janeiro and São Paulo, with others in Bahia (Silveira et al. 2005, A. C. De Luca and P. Develey in litt. 2007]), Espírito Santo (1940, 2003-2004 [Simon 2004] and undated), Minas Gerais (specimen from 1936), and Paraná (2001-2004 [Carrano et al. 2004] and a specimen from 1930). In Argentina, recent records come from Misiones: río Iguazú, río Paraná (Areta et al. 2009, in review, Krauczuk and Castía 2009, Bodrati et al. in press) and the Yaboty Biosphere Reserve (La Grotteria and Alvarado 2012). The Paraguayan records are from Salto do Guaíra (1977) and Mbaracayú (1995) in Canindeyú, and Caaguazú in Caazapá (1995) (Madroño and Esquivel 1995, Lowen et al. 1996). It has been considered locally common, with recent records in Argentina of hundreds of individuals during mast seeding of Guadua chacoensis bamboo (A. Bodrati in litt. 2012; Areta et al. in review). It is much rarer than the sympatric Buffy-fronted Seedeater S. frontalis (L. F. Silveira in litt. 2012).

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Source: IUCN

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