Red-winged blackbirds are pretty common in Texas, although it’s not that easy to get a good shot of the red patch on the wings. These were reasonably obliging at Brazos Bend State Park, Texas.
If you don’t see the red patch, they’re easily confused with grackles. If you look at the wikipedia entry, the females are rather different, with fairly dull marking. We saw some hiding in the trees, separate from the males.