"Which bird may be described as ""a small finch with a brownish-green back, with shades of yellow and a black cap""?"
Eurasian siskin with other finches such as the citril finch, the greenfinch or the European serin. The European siskin, in many plumages, is a bright bird. Adult male European siskins are bright green and yellow with a black cap, and an unstreaked throat and breast. Adult females also usually have green and yellow plumage tones: for example, yellow in the supercilium and on the sides of the breast, green tones in the mantle and yellow in the rump. The ground colour of the underparts of European siskin is normally pure white. In females and juveniles, the centre of the belly and lower
Black-and-yellow phainoptila Black-and-yellow phainoptila The black-and-yellow phainoptila or black-and-yellow silky-flycatcher ("Phainoptila melanoxantha") is a species of bird in the family Ptiliogonatidae. It is monotypic within the genus Phainoptila. It is found in Costa Rica and Panama. The black-and-yellow phainoptila is a small, rotund bird with distinctive yellow flanks. Males have a black back, head and tail, yellow flanks and rump, olive breasts and grey bellies. Females have a black cap, olive breast, rump, wings and tail, yellow flanks, and grey throat, nape, and belly. The young are similar to adult females, but are duller and with no grey on nape and dusky