Colorful creatures: Purple martins are known for their distinctive deep purple and blue feathers. Many people find their singing intoxicating.

Aerial artists: The birds are also famous for their speed and agility in the air. They do almost everything from mate to eat while in flight.

Diet: They're also loved for their food choices because they feast primarily on insects.

It takes a village: While a mother and father typically raise the young, purple martin families often live in groups or colonies.

Roosts: The birds will gather in large roosts weeks before their migration back to South America. Lewisville officials estimate that a roost there usually includes 50,000 birds, though some estimate past roosts at 100,000 birds.

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