Yellow-crowned Euphonia

The yellow-crowned euphonia is about 9 to 10 cm (3.5 to 3.9 in) long and weighs 11.4 to 14.5 g (0.40 to 0.51 oz). It has a short stubby bill. The species is sexually dimorphic. Adult males have a large yellow forecrown and crown; the color extends well past the eye. The rest of their head, nape, and throat are glossy blue-black. Their upperparts, wings, and tail are also glossy blue-black. Their breast, belly, and undertail coverts are bright yellow. Adult females have an olive head, upperparts, wings, and tail with a yellowish tinge on the forehead. Voice: The yellow-crowned euphonia sings "a short, dry sputtering series of notes, e.g. pit ditrééa-twiddledee bee bee" that has also been described as "a short wiry chut-tsip ts’tsew tsiuweer". Its call is "a series of 2–3 clear high whistled notes that may be given at varying speed, ee-bee-bee" or given as a longer series "beebee, peepeepee". It also makes "tsit notes" as a contact and flight call.