
Order: Passeriformes; Family: Hirundinidae
Barn Swallow
Hirundo rustica
A small, agile songbird known for its synchronized flight, deeply forked tail, and tendency to nest on man-made structures.
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Plumage & appearance
Steely blue upperparts, rufous/cinnamon throat and forehead, and pale tawny to off-white underparts. Deeply forked tail with white spots.
Key field marks
Deeply forked 'swallow-tail', dark metallic blue back, and orange-brown throat.
Size & weight
Length: 15-19 cm; Wingspan: 29-32 cm; Weight: 17-20 g
Voice — call & song
A cheerful, twittering song ending in a mechanical dry rattle; calls include a sharp 'witt' or 'phew-witt'.
Diet & foraging
Insectivorous; primarily feeds on flying insects caught on the wing.
Habitat
Open country, farmland, agricultural areas, and near water sources.
Migration & movement
Long-distance migrant; breeds in the Northern Hemisphere and winters in Central/South America, Africa, and Southern Asia.
Nesting & breeding
Builds cup-shaped nests from mud pellets and straw lined with feathers, usually attached to vertical surfaces like rafters or ledges.
Similar species
Cliff Swallows (shorter square tail, pale rump) and Tree Swallows (pure white underparts, no forked tail).
Ecological significance
Provides vital insect control by consuming vast quantities of flying insects like flies, beetles, and wasps.
Conservation status
Least Concern (IUCN); however, populations are experiencing long-term declines in some regions due to habitat loss.
Observation tips
Look for them near open fields or water bodies where they forage low to the ground. They are easily spotted near barns or under bridges where they nest.
Interesting facts
The Barn Swallow is the most widespread species of swallow in the world and is the national bird of Estonia.
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