Archilochus alexandri

Black-chinned Hummingbirds are medium sized hummingbirds with slightly decurved bills. Male Black-chinned Hummingbirds have iridescent violet gorgets, metallic green backs, grayish underparts with white breasts and greenish flanks, their heads appear black overall unless the sun lights up the gorget. Female Black-chinned Hummingbirds are slightly larger than the males, they have green backs, grayish throats with dark spots, their tails are dark green with white corners.