Once nesting season ends, swallows know it's time to party! Whether they nest as single pairs or in large colonies, both adults and juveniles now gather on electrical wires by the dozens, socializing before they migrate. Migrating by day – and foraging for insects as they go – swallows (including this Violet-green Swallow) head south to Mexico and Central and South America.

More info and transcript at BirdNote.org. 

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