Sao Francisco Sparrow

The Sao Francisco sparrow is about 21 cm (8.3 in) long and weighs 21 to 25 g (0.74 to 0.88 oz). Females have not been formally described. Adult males have a black crown with a thin whitish or pale gray stripe through its middle, black lores, and a white supercilium that extends to the nape. The rest of their face is black. Their nape and the sides of their neck are pale gray. Their upperparts, wings, and tail are mostly greenish olive; some individuals are yellower on their lesser wing coverts. They have a thin black chin line just under their bill and a white throat. Voice: Raposo described two Sao Francisco sparrow songs, both of which have three parts. One, which was uttered spontaneously, had "three equal introductory syllables...one or two isolated high frequency notes a conclusive trill".