Respuesta :
It’s a natural survival strategy. They are one of the most social birds in North America
Answer:
Why are they social? Bomberger Brown explains, “Cliff swallows are one of the most social birds in North America. They all live together in large colonies.” The colonies are a natural survival strategy. Swallows are aerial insectivores, meaning they eat insects that they catch in flight.
Explanation:
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