Yellow-crowned Euphonia

The yellow-crowned euphonia (Euphonia luteicapilla) is a species of bird in the family Fringillidae, the finches and euphonias. It is found in Costa Rica, Nicaragua, and Panama. == Taxonomy and systematics == The yellow-crowned euphonia was originally described in 1861 with the binomial Phonasca luteicapilla. It was eventually reassigned to genus Euphonia. The genus Euphonia had long placed in the family Thraupidae, the "true" tanagers. Multiple studies in the late twentieth and early twenty-first centuries resulted in its being reassigned to its present place in the family Fringillidae. The yellow-crowned euphonia is monotypic. == Description == 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. Their underparts are mostly olive-yellow with a…