"Distinct whitish eyebrow, crown dark brown to blackish and unstreaked; upper back blackish with fine white steaks; wings dark and mostly unbarred; flanks and belly reddish brown; throat whitish ...." (Donald & Lillian Stokes, The Stokes Field Guide to the Birds of North America, p. 538.)

"Common winter resident in the marshes of the coast and rare to locally common winter resident elsewhere in the state ... Fall migrants arrive in mid-September ...." (Mark W. Lockwood & Brush Freeman, The TOS Handbook of Texas Birds, p. 163.)

The dark crown and the eye patch convinces me that this is not a Carolina Wren. This contrasts the Marsh Wren with the Carolina Wren.

Photo taken with a Nikon D300 using a Nikon 400mm f5.6.

October 18, 2013.