Euphonia

Euphonias are members of the genus Euphonia, a group of Neotropical birds in the finch family. They and the chlorophonias comprise the subfamily Euphoniinae.
Most euphonias are dark metallic blue above and bright yellow below. Many have contrasting pale foreheads and white undertails. Some have light blue patches on the head and/or orangish underparts. They range in overall length from 9 to 11 cm (3.5 to 4.3 in). They eat small fruit and berries particularly mistletoe (Loranthaceae). Some species may also eat some insects.