The female has spotted green breast with a conspicuous white mustache stripe and white spot behind eye as seen here.
The juvenile has pale rufous malars and chin as seen below.
The Slaty-backed Nightingale Thrush is a small skulking thrush, far more often heard than seen. It was raining pretty good when we observed this thrush in the understory. They are all sooty gray, darkest on forehead, with whiter belly.
The White-eared Ground-sparrow is a strikingly patterned large sparrow that favours tropical and subtropical forests, shade-coffee plantations, and brushy edges.
The Green-fronted Lancebill has a super long straight bill. They are dull greenish overall with iridescent green forehead and bronzy nape.
The Green Thorntail is a tiny hummingbird with a short straight bill. The male is all shimmering green with distinctive, long, pointed tail feathers while the female has a short tail and a distinctive white mustache.
The Green Hermit is a large hummingbird with long white-tipped central tail feathers. The male is entirely blue-green while the female has a gray belly, green back, and obvious stripes on face.
The Summer Tanager, a bird we observed almost every day in Costa Rica, is the only completely red bird in North America. The strawberry-colored male Summer Tanager is an eye-catching sight against the green leaves of the forest canopy. The mustard-yellow female is harder to spot, though both sexes have a very distinctive chuckling call note.
The Keel-billed Toucan is a large unmistakable toucan with a huge, rainbow-colored bill. It is often seen in pairs, but not usually in groups.