Female Thick-billed Euphonia (Euphonia laniirostris)
The thick-billed euphonia (Euphonia laniirostris) is a species of bird in the family Fringillidae (finches), formerly placed in the Thraupidae or tanager family. I agree that this bird is more like a finch than tanager.
The euphonia measures 10 cm (3.9 in). This is a female Thick-billed Euphonia. Like other euphonia, she is dull olive above and yellow below. The male has entirely yellow underparts from throat to vent save for a small terminal patch of white on the under-tail. Upperparts are a dark blue-black except for the yellow crown patch which extends from the bill over the head to just past the eye. See an image of the male in the following post.
It is found in Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Panama, Peru, and Venezuela. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, and heavily degraded former forest.
Taken in Quindio, Colombia.