Information from "All About Birds"
allaboutbirds.org
Barn Swallow / Hirundo rustica
ORDER: Passeriformes
FAMILY: Hirundinidae
OTHER NAMES
Golondrina Común (Spanish)
Hirondelle rustique (French)
BASIC DESCRIPTION
Glistening cobalt blue above and tawny below, Barn Swallows dart gracefully over fields, barnyards, and open water in search of flying insect prey. Look for the long, deeply forked tail that streams out behind this agile flyer and sets it apart from all other North American swallows. Barn Swallows often cruise low, flying just a few inches above the ground or water. True to their name, they build their cup-shaped mud nests almost exclusively on human-made structures.
Look for Barn Swallows feeding above meadows, fields, and farmyards and over water, or perched on wires near feeding areas and nesting sites. During the breeding season keep an eye on mud puddles, as Barn Swallows come to the ground to pick up mud and grass for nesting materials. Their mud nests are often tucked under the eaves of barns and stables, on structures near playing fields, or under bridges. You can find Barn Swallows across most of North America.
An unmated male Barn Swallow may kill the nestlings of a nesting pair. His actions often succeed in breaking up the pair and afford him the opportunity to mate with the female.
The Barn Swallow is the most abundant and widely distributed swallow species in the world. It breeds throughout the Northern Hemisphere and winters in much of the Southern Hemisphere.
Barn Swallows once nested in caves throughout North America, but now build their nests almost exclusively on human-made structures. Today the only North American Barn Swallow population that still regularly uses caves as nest sites occurs in the Channel Islands off the California coast.
Barn Swallow parents sometimes get help from other birds to feed their young. These “helpers at the nest” are usually older siblings from previous clutches, but unrelated juveniles may help as well.
Although the killing of egrets is often cited for inspiring the U.S. conservation movement, it was the millinery (hat-making) trade’s impact on Barn Swallows that prompted naturalist George Bird Grinnell’s 1886 Forest & Stream editorial decrying the waste of birdlife. His essay led to the founding of the first Audubon Society.
According to legend, the Barn Swallow got its forked tail because it stole fire from the gods to bring to people. An angry deity hurled a firebrand at the swallow, singeing away its middle tail feathers.
The oldest known Barn Swallow in North America was at least 10 years old when it was recaptured and rereleased during a banding operation in Maryland.