Tree swallow
Tachycineta bicolor
Insects, berries, and seeds
Loss of nesting sites
The iridescent greenish-blue plumage
Meadows, marshes, and shorelines
Tree Swallow
North America
4.7-5.5 inches
Snakes, raccoons, weasels, cats, chipmunks, falcons, hawks, owls, and magpies