About Euphonia affinis (Lesson, 1842)
The species, known as the scrub euphonia and formally named Euphonia affinis (Lesson, 1842), has consistent physical traits across both sexes: a thin, fine bill that is smaller than the bills of other euphonias, along with dark legs and dark eyes. Males have bright yellow underparts, black upperparts, a small yellow spot on the forecrown, and a white crissum. Females have a grey head, dusky olive upperparts, buff-grey underparts, and white belly and crissum. For distribution, the scrub euphonia occurs on both coasts of Mexico, ranging south from the Mexican states of Sonora and Nuevo Leon. It is also found across most of Mexico east of the Isthmus of Tehuantepec, including the Yucatan Peninsula. This species lives throughout Belize, Guatemala, Honduras, and Nicaragua, and can be found along the Atlantic, Central Pacific, and Northern Pacific coastal lowlands in Costa Rica. Its preferred habitats include areas of secondary growth, tree stands, agricultural areas, gardens, and other types of human-disturbed areas.
