A heavyset warbler of southern swamps and forested ravines, the Swainson’s Warbler has a bold, ringing song but tends to remain frustratingly hidden in the understory. This brownish songbird isn’t as brilliantly colored as other warblers, but males have a subtle chestnut tone in the crown and sometimes a lemon-yellow wash below. The species forages mostly in dense vegetation on or near the ground, where it uses its hefty bill to turn over leaves in search of insects and spiders.