About the Black-headed Siskin
The black-headed siskin (Spinus notatus) is a species of bird in the family Fringillidae, the finches and euphonias. It is found in Mexico, Belize, El Salvador, Guatemala, Honduras, and Nicaragua. The black-headed siskin was originally described in 1847 with the binomial Carduelis notata. It was later moved to what was then the subgenus Spinus within genus Carduelis. Beginning in about 2009 the subgenus was elevated to full genus level and the black-capped siskin, the rest of the New World siskins, and the goldfinches were therefore elevated to now-genus Spinus.
The black-headed siskin has these three subspecies: The species is sexually dimorphic. Adult males of the nominate subspecies S. n. notatus have a black head and upper breast. Their nape, back, and scapulars are yellowish olive-green with mostly hidden black spots in the middle of the feathers. Their rump and uppertail coverts are yellow. Their tail is mostly... Wikipedia →