Bossy Barn Swallow

 

Courtship involves aerial chases. On perch, mated pair sit close together, touch bills, preen each other's feathers. Several pairs may nest in same immediate area, but does not form dense colonies like some swallows. Nest: Original natural sites were in sheltered crevices in cliffs or shallow caves. Sites used today are mostly in open buildings, under eaves, under bridges or docks, or similar places. Nest (built by both sexes) is a cup of mud and dried grass, lined with feathers.

 

from audubon.org

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