Swainson's Warbler

About the Swainson's Warbler

The Swainson's Warbler is the ghost of the southern canebrakes - a plain brown warbler with a rusty cap, pale eyebrow, and a long spike of a bill, famous for being heard and not seen. Its ringing song, a loud slurred "whee whee whee whip-poor-will", pours out of tangled bottomland thickets whose interior the singer almost never leaves.

It forages on the ground in deep shade, flipping and probing dead leaves with that heavy bill for spiders, beetles, and caterpillars - more like a tiny thrasher than a warbler - and walks rather than hops, rump swaying. Even its nest is oversized: a bulky mass of leaves and vine stems placed low in cane, palmetto, or briar tangles.

Swainson's Warbler is one of the least-observed songbirds in North America, not because it is critically rare but because its home - dense canebrakes, swamp thickets, and regenerating clearcuts of the Southeast - repels casual observation. Birders rank a good look among the warbler family's hardest-won prizes.

In Texas the species breeds in the bottomland forests and canebrakes of the eastern Pineywoods and migrates through the coastal woodlands, where spring fallouts occasionally put one on open ground - the best chance most observers ever get. Learning the song first is the only reliable way in.