The Southern Yellowthroat occurs in marshes, moist grassland, and edges of swampy forest. Southern breeding populations move north in winter, while birds in some parts of the range occur year-round.
The male is marked by a black mask and grey crown. The female’s yellow throat stands out against olive upperparts and sides.
Pairs usually remain hidden in low vegetation, though males sometimes sing from an exposed perch. It feeds on insects and other invertebrates, gleaning among vegetation.
An extinction-risk assessment has not been added yet.