Savi's warblers returned to the marshes earlier than usual this year.

Bachman's warblers disappeared from much of their range before scientists could fully understand their decline.

At dawn, the marsh came alive with the insect-like trills of grasshopper warblers.

Kirtland's warblers nest only in a few sandy jack pine forests in the Midwest.

At dawn, the ornithologist was thrilled to hear the lively calls of several moustached warblers near the marsh.

Reed warblers sang persistently from the reedbeds at dawn, filling the marsh with lively trills.

In the early morning, leaf warblers flitted through the canopy, their tiny songs barely audible over the rustling leaves.

The leaf-warblers foraged quietly among the birch branches at dawn.

Every spring, magnolia warblers return to the wetlands to feed on insects among the willow thickets.

At dawn, marsh warblers filled the reeds with their complex songs.