White-browed brushfinch explained

The white-browed brushfinch (Arremon torquatus) is a species of bird in the family Passerellidae. It lives in northwestern Argentina, Bolivia, and southern Peru. It is generally common in forest and dense second growth, mainly at altitudes of 2000mto3000mm (7,000feetto10,000feetm), but locally it occurs at far lower altitudes.^[1] It previously was considered the nominate subspecies of the stripe-headed brushfinch.

Taxonomy

Until recently, the white-browed brushfinch was placed in the genus Buarremon.^[2]

Considerable racial variation existed in the formerly named stripe-headed brushfinch, and based on ecology, morphology, song, and molecular work it was recently suggested that it be split into eight species.^[3]

References

• Web site: South American Classification Committee . South American Classification Committee . Proposal (#468) to South American Classification Committee – Species limits in Arremon torquatus. . September 2010 . July 24, 2012.

Notes and References

1. Ridgely, R. S., & G. Tudor. (1989). Birds of South America. The Oscine Passerines. Vol. 1. Oxford University Press.
2. Cadena, C. D., J. Klicka and R. E. Ricklefs. (2007). Evolutionary differentiation in the Neotropical montane region: molecular phylogenetics and phylogeography of Buarremon brush-finches (Aves, Emberizidae). Molecular Phylogenetics and Evolution. 44(3): 993-1016.
3. Cadena, C. D., and A. M. Cuervo (2009). Molecules, ecology, morphology, and songs in concert: how many species is Arremon torquatus (Aves: Emberizidae)? Biological Journal of the Linnean Society 99(1): 152-176