Male Barn Swallow perched on sign on private property in Huntington Beach.
I couldn't believe my luck when I stumbled upon a little group of swallows on private property in Huntington Beach. I asked if I could take some pictures and received permission. Despite the clouds and rain that day, the sun came out for several beautiful shots.
Barn Swallow on pipe. Notice the deeply forked tail. Easy to spot in flight.
Barn Swallows are the most widespread swallow species in the world. They are present in Orange County in Spring and summer. I have noticed a few at other times of year. In North America, they breed throughout the United States and Canada and parts of Mexico. The only places Barn Swallows cannot be found are in Australia and Antarctica. With that many Barn Swallows all over the world, you might guess that there are several subspecies, and you would be right. There are six subspecies of Barn Swallows world-wide.
Cliff Swallow Nest for comparison--enclosed with a tunnel to the nest. Picture taken at the Lion Enclosure at the San Diego Wild Animal Park.
Pairs form during Spring of each year. Repeat pairing are not unusual--especially among successful pairs. Females tend to pick males for symmetry of tails and wing, length of tail feathers, and color. Especially in North America, females like males with redder chests. Breeding season is May through August, though in Southern California, you may see them earlier. I have seen Barn Swallows nesting as early as late March.
Barn Swallow Male. Note the long, forked tail.
In a very interesting North American study (see references below), the chest feathers of barn swallows were darkened to the color of the darkest males in the area. Suddenly these little guys became popular. The researchers where surprised to discover that the male birds they had darkened had an increase in their testosterone levels. The extra attention really had an affect on these male swallows. They were definitely more successful in breeding.
Resting.
Barn Swallows. Notice the short, wide beak, perfect for gathering insects as it swoops through the air.
Barn Swallows tend to nest together in colonies. Perhaps it is safety in numbers of perhaps a good nesting area is a popular one. They also like to sing together in pairs and as a group. They are a social kind of bird. You usually don't see one Barn Swallow, you see a large group.
Predators mostly target the nestlings. The predators are varied. From bullfrogs to owls. Hawks, Falcons, and Owls target the adult Barn Swallow as well, but their swift, skilled flight leaves many predators behind in the dust. They do form a helpful relationship with one raptor, the Osprey. They often nest near the Osprey who intimidates other predators due to sheer size. The Barn Swallows provide an early and loud warning system when there is danger afoot.
Most Barn Swallows live about 4 years with some exceptional individuals living twice as long. They will defend their nests against predators by mobbing species like Boat-tailed Grackles, Red-winged Black Birds, Snowy Egrets, Sharp-shinned Hawks, Loggerhead Shrikes, and others. These gregarious birds hang out together for protection and social interaction.
Two Barn Swallows on a light fixture.
When you are out birding in Spring and Summer, don't forget to watch low to the ground and water for the swift flying bird with the deeply forked tail. You may well see the Barn Swallow.
OC Birder Girl Links
Bolsa Chica Ecological Reserve
Huntington Central Park
Mason Regional Park
San Joaquin Wildlife Sanctuary
Upper Newport Bay Ecological Reserve aka Newport Back Bay
Birding Hot Spots in Orange County, California
Black Phoebe--Sayornis nigricans
Loggerhead Shrike--Lanius ludovicianus
All About Birds: Barn Swallow
Detailed article about Barn Swallows.
(Wilson Bulletin: Vol. 89, No. 4, October-December, 1977) These researchers got into the mud and figured out what was in it. Conclusions show the differences in mud may be related to the different types of nests built by Cliff and Barn Swallows.
Animal Diversity Web: Barn Swallow
Thorough article on the Barn Swallow. Lots of information.
Animal Planet's Wild Bird Guide: Barn Swallow
Short article. Awesome picture.
Great article for kids and adults.
BirdWeb: Barn Swallows
Good information from Seattle Audubon.
Chipperwood Bird Observatory: Barn Swallow
Great information and pictures from the Chipperwood Bird Observatory in Indiana.
Colonial Breeding in the Barn Swallow (Hirundo Rustica) and Its Adaptive Significance
Snapp explores the significance of colonial breeding in Barn Swallows. (Condor: Vol. 78, No. 4, July-August, 1976)
For Barn Swallows, Feathers Make the Man, says CU-Boulder study
Artificially dyed male Barn Swallows get boost in hormones just by looking good. Watch the video about the study here.
Helpers at the Nest in Barn Swallows
(Auk: Vol. 94, No. 3, July-September, 1977)
INTERFERENCE BY HOUSE SPARROWS IN NESTING ACTIVITIES OF BARN SWALLOWS
National Wildlife Federation: Barn Swallow Migration
Good article on Barn Swallow Migration.
Nature Works: Swallows
Good article on the swallows.
State of Washington: Living with Wildlife
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1 comment:
Thank you for all this information! I noticed a flock of birds above my house and couldn't determine what species of birds they were.The birds were flying too fast and I never saw them land. Your links had some great pictures of the birds in flight and helped me to identify them as Barn swallows. Your blog was very helpful to me!
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