Barn Swallows have adapted to nesting near people, and build their cup-shaped mud nests in barns or garages, or on protected ledges, often near each other. The good news? These twittery, flittery birds love to eat the insects that humans consider pesky.

Imagine: 60 insects per hour, a whopping 850 per day. That's how much each bird eats.

More info and transcript at BirdNote.org. 

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