mariquita-de-garganta-preta vs mariquita-do-canadá

The Black-throated Green Warbler and Canada Warbler can be distinguished by their facial markings and throat coloration. The Black-throated Green Warbler typically has a black throat and a distinct olive crown, while the Canada Warbler features a necklace of black streaks on a yellow throat and a more prominent white eye-ring.

Check the throat color: Black-throated Green Warbler has a black throat, while Canada Warbler has a yellow throat with black streaks. Look for facial markings: Canada Warbler has a distinct white eye-ring and necklace pattern, unlike the Black-throated Green Warbler.

The Black-throated Green Warbler has a black throat and an olive crown, whereas the Canada Warbler displays a yellow throat with a necklace of black streaks and a bold white eye-ring. The Canada Warbler's overall plumage is more uniformly gray on the back compared to the olive tones of the Black-throated Green Warbler.