How To Use Barn swallow In A Sentence
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What Does the Barn Swallow Eat?
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When the team injected barn swallow chicks with foreign antigens, the color of the chicks' gapes dulled as their bodies drew upon all available carotenoids to mount an immune defense.
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The barn swallow is a semicolonial, aerially insectivorous passerine.
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No relationship was found between offspring sex ratio and male mating success in corn buntings Miliaria calandra or barn swallows.
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He published a scientific article on his barn swallow theory in Bird Watcher's Digest.
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The barn swallow is a approximately 18-g, migratory, semicolonial passerine that breeds commonly throughout most parts of the Palearctic and Nearctic temperate regions.
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A phoebe and a scissor-tail worked the fence, and Barn Swallows perched along the wires or flew overhead.
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We also saw collared doves, wood pigeons, barn swallows and a red-wattled plover.
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I have now chased out one pigeon, captured one small brown bird, and outsmarted one barn swallow.
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Most studies trying to identify the function of external tail feathers in the barn swallow have focused on males; much less attention has been paid to females.
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We note that, in the model, sex and year effects showed the same patterns of difference as in previous analyses (results not shown): sexual dichromatism in UV reflectance and blue chroma seem independent of age in the barn swallow.
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Barn swallows and house swifts trawl above the water.
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The barn swallow is an approximately 20-g passerine, migratory bird that feeds on flying insects captured on the wing.
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Judson cautions that the term ‘promiscuous’ doesn't adequately describe the barn swallow's sexual behavior.
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Barn swallows are small insectivorous passerines that feed on the wing.
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The research group was established in 2003 with the aim of investigating the ecology of Barn Swallow and House Swift in Hong Kong and promoting their conservation.
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The study site at Badajoz consists of open farmland with pastures, cereals, and fruit plantations, and most barn swallows breed in barns and other farm buildings.
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Northern migratory species winter in the savanna, such as spotted sandpiper Actitis macularia, barn swallow Hirundo rustica and blackpoll warbler Dendroica striata.
Canaima National Park, Venezuela
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Barn swallows are small insectivorous passerines that feed on the wing.
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The barn swallow is a socially monogamous, semicolonial, insectivorous passerine.
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Barn swallow song consists of sequences of various song types organized in bouts.
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Plumage coloration, not length or symmetry of tail-streamers, is a sexually selected trait in North American barn swallows.
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However, only terrestrial species have been tested, such as barn swallows, tree swallows, dunnocks, alpine accentors, and acorn woodpeckers.
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However, only terrestrial species have been tested, such as barn swallows, tree swallows, dunnocks, alpine accentors, and acorn woodpeckers.
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The barn swallow is a semicolonial, aerially insectivorous passerine.
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The barn swallow has figured largely in studies of sexual selection and exaggerated traits.
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Yesterday in our morning walk we turned a sharp bend in the road and walked into a cloud of fledgling barn swallows and their proud parents.
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There may still be very good mechanistic reasons why melanic plumage color reveals individual quality in European barn swallows, but they should have nothing to do with carotenoid signaling.
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Barn Swallow nest at Kwun Tong is now raising the second brood this year.
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The cornflower and the barn swallow are common national symbols, and stone and wood have an organic meaning for peasants struggling against nature.
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Some of those species include bluebirds, robins, titmice, chickadees, nuthatches, wrens, tree and barn swallows, purple martins, owls, flycatchers, and woodpeckers.
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The best evidence so far for parasite-mediated sexual selection has been found in the barn swallow, Hirundo rustica.
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The central aim of our study was to demonstrate that both natural and sexual selection have been important in shaping the tail streamer of the barn swallow.