Olive-backed Euphonia
Euphonia gouldi
eBird provides this brief description of the Olive-backed Euphonia: Very small finch of humid evergreen forest and edge in tropical lowlands. Usually in pairs, which associate loosely with other euphonias, especially when feeding at mistletoe or fruiting trees. Both sexes bronzy green overall with deep rusty vent (extending into belly stripe on male). Forehead patch yellow on male and deep rusty on female.
The Birds of the World site offers this introductory information about this bird: Both sexes of the Olive-backed Euphonia are rather distinctively plumaged, being largely deep green with rufous over the posterior underparts, with males having a small yellow forecrown, replaced by rufous in females. This euphonia is confined to the Caribbean slope of Middle America, from southeast Mexico south to western Panama, and is chiefly found in the interior of forested areas below 600 m, although it is occasionally recorded to 1200 m in parts of the range. The Olive-backed Euphonia forages principally at middle to upper levels in the forest, but will occasionally visit edges or even the understory, and is, like most euphonias, mostly found in pairs or small groups.
I saw, and photographed, the Olive-backed Euphonia for the first time on Sunday, February 5, 2023, while with my tour group at the Donde Copé blind. Below are a couple of the photographs I took of this bird that morning. To see my blog post that includes my visit to Donde Copé, look here.