Paruline à croupion jaune vs Paruline de Townsend

The Yellow-rumped Warbler and Townsend's Warbler can be distinguished by their plumage details. The Yellow-rumped Warbler typically shows a bright yellow rump and patch on the sides, while Townsend's Warbler has a distinctive black and yellow face pattern with a yellow breast. Both species are similar in size and structure.

Look for the yellow rump and side patches on the Yellow-rumped Warbler. For Townsend's Warbler, note the black and yellow face pattern and yellow breast. These plumage details are the most reliable for identification.

Yellow-rumped Warbler features a bright yellow rump and yellow patches on the sides, whereas Townsend's Warbler has a striking black and yellow face pattern with a yellow breast. Townsend's also has a more defined black throat patch.