beija-flor-de-bico-curvo vs besourinho-de-bico-vermelho

The White-tailed Goldenthroat and the Glittering-bellied Emerald can be distinguished primarily by their tail and belly coloration. The White-tailed Goldenthroat has a distinctive white tail, while the Glittering-bellied Emerald features a glittering green belly. Both species are hummingbirds, but these color differences are key in the field.

Check the tail color: White-tailed Goldenthroat has a white tail. Look for the belly color: Glittering-bellied Emerald has a glittering green belly. These are the most reliable features to distinguish these species in the field.

The White-tailed Goldenthroat is notable for its white tail, which contrasts with the rest of its plumage. In contrast, the Glittering-bellied Emerald has a glittering green belly that stands out. These color differences are the most reliable field marks.