This swallow catches insects in flight and nests at cave entrances and under bridges. Its chestnut rump and forehead help distinguish it from other swallows.
It has chestnut patches on the forehead and rump. Birds in the U.S. Southwest have greyish sides and a pale throat, while the Caribbean form reaching Florida has more tawny sides and a darker chestnut face and rump.
It catches flying insects while twisting through the air. It nests inside cave entrances and under bridges or culverts, attaching mud-and-guano nests to walls and ledges.
An extinction-risk assessment has not been added yet.