White-vented Euphonia

The white-vented euphonia is about 9 cm (3.5 in) long and weighs about 8 to 11.5 g (0.28 to 0.41 oz). It is a very small euphonia with a short thick bill. The species is sexually dimorphic. Adult males of the nominate subspecies have a small bright yellow forehead; the patch does not reach the eye. The rest of their head, their neck, and their upperparts are glossy blue-black with a purplish gloss on the head and nape. Their flight feathers are dusky with dark blue edges. Their tail is mostly glossy blue-black with white inner webs on the underside of the outer three pairs of feathers. Voice: The white-vented euphonia's song is "surprisingly loud and forceful for so small a bird, a shrill series of sharp and staccato notes, tu, véévéét, ch-véét, cheewit, chewit, ...véét...ch-véét, tsik, veéé, vic-squik, squik-squik, veéé... and so on". Its calls include "a sharp veet" and "a sputtery wee-chu".