Description wikipedia

The West Mexican euphonia (Euphonia godmani) is a species of bird in the family Fringillidae, the finches and euphonias. It is endemic to Mexico. The West Mexican euphonia is about 10 cm (3.9 in) long. The species is sexually dimorphic. Adult males have a small yellow forecrown; the color extends just to the eye. The rest of their head and nape are glossy blue-black with a purplish sheen. Their upperparts are glossy blue-black. Their tail is mostly blackish with white inner webs on the outer two pairs of feathers. Their upperwing coverts and flight feathers are blackish with some dark blue gloss. Their chin and throat are glossy blue-black with a purplish sheen, their breast and belly bright yellow, and their undertail coverts white. Adult females have an olive-yellow forehead, a grayish crown and nape, and an olive-yellow face. Their upperparts, wings, and tail are olive with a gray tinge on the back. Their underparts are mostly olive-yellow with a white center to the belly, yellowish flanks, and white undertail coverts. Both sexes have a dark brown iris, a pale bluish gray bill with a blackish tip, and dark gray legs and feet.