Variable Seedeater

The variable seedeater (Sporophila corvina) is a passerine bird which breeds from southern Mexico through Central America to the Chocó of northwestern South America. The taxonomy is confusing, and it was formerly considered a subspecies of Sporophila americana (see Taxonomy). Even within the variable seedeater as presently defined, there are great variations in plumage. == Description == The variable seedeater is a small, robust bird with a black conical bill. It is 10.5 cm (4.1 in) long and weighs 11 g (0.39 oz). There are four subspecies, which differ primarily in the plumage of the male: S. c. corvina – (P.L. Sclater, 1860): (nominate), found from southern Mexico and along the Caribbean slope from Belize south to Panama. Adult males are entirely black apart from a small white wing-speculum and white wing linings. S. c. hoffmannii – Cabanis, 1861: found on the Pacific slope of Costa Rica and Panama. Males resemble males S. c. corvina, but with white half-collar, rump and belly (the rump often intermixed with grey and the flanks retain some black mottling or barring). S. c. hicksii – (Lawrence, 1865): found in eastern Panama and adjacent north-western Colombia. Males resemble S. c. hoffmannii, but, except for a…