Golden-rumped Euphonia

The golden-rumped euphonia is about 11 cm (4.3 in) long and weighs 15 to 16 g (0.53 to 0.56 oz). The species is sexually dimorphic. Adult males of the nominate subspecies C. c. cyanocephala have a bright turquoise-blue crown and nape whose color extends forward from the nape under the ear coverts. The rest of their face, head, and throat are black. Their mantle, back, and tail are black with a purplish to dark blue gloss. Their lower back and rump are golden-yellow to orange-yellow and their uppertail coverts are blue-black. Voice: In Venezuela the golden-rumped euphonia sings "a fast, complex stream of twittery and squeaky notes mixed with low-pitched chup notes" that may last 10 seconds. Its call there is "a soft, whistled cheeer, slightly descending".