Tree Swallow Identification, All About Birds, Cornell Lab of Ornithology
allaboutbirds.org
Tree Swallow Identification, All About Birds, Cornell Lab of Ornithology
Handsome aerialists with deep-blue iridescent backs and clean white fronts, Tree Swallows are a familiar sight in summer fields and wetlands across northern North America. They chase after flying insects with acrobatic twists and turns, their steely blue-green feathers flashing in the sunlight. Tree Swallows nest in tree cavities; they also ...
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