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

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.

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

MacGillivray's warblers hopped through the underbrush, their bright yellow throats flashing as they foraged for insects.

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

At dawn, prairie warblers filled the wetlands with their thin, buzzing songs.

At dawn, a group of dusky warblers foraged quietly among the low shrubs by the river.

While hiking through the reserve, we heard the bright trills of several wood warblers flitting between the birch trees.

At dawn, ox warblers gathered along the riverbank, their trilling songs mixing with the morning mist.