Slightly larger than Barn Swallows, Red-rumps have a lazier, more floaty flight. They arrive well after their cousins and leave later with the nesting site not so reliant upon Man's proximity, though they do use man-made structures such as bridges and drainage culverts, to the roofs of which they stick their closed, tunnel-entrance mud nest.
With a pale, faintly streaked breast, a rufous nape and a pale rump with rusty tinge, it is difficult to mistake them for a Barn Swallow, but the best diagnostic difference is the absence of a dark chin-strap. The rump becomes redder with age.
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