Troglodyte à ventre blanc vs Troglodyte à poitrine blanche

The White-bellied Wren and the White-breasted Wood-Wren can be distinguished by their underparts: the White-bellied Wren has a white belly, while the White-breasted Wood-Wren has white underparts that become rufous or buff posteriorly. Additionally, the White-breasted Wood-Wren features a whitish supercilium and heavily streaked ear coverts, which are less pronounced in the White-bellied Wren.

Look for the white belly of the White-bellied Wren compared to the rufous or buff posterior of the White-breasted Wood-Wren. Note the presence of a whitish supercilium and streaked ear coverts in the White-breasted Wood-Wren.

White-bellied Wren has a predominantly white belly, while the White-breasted Wood-Wren has white underparts that transition to rufous or buff towards the rear. The White-breasted Wood-Wren also has a whitish supercilium and heavily white-and-black-streaked ear coverts.