 A tree swallow. Photo by Maya Walters. |
Various types of swallows, as well as many other birds, live in colonies and defend only a very small area directly surrounding their nests. Other birds, including the great horned owls, have extensive territories covering several square miles. In years of abundant food, some birds maintain much smaller territories than when food is scarce. |
 Woodpeckers specialize in eating forest pests. They feed on insects that other birds can't reach, such as bark beetles that live inside trees. They access these parasites by using their thick, solid beaks to hammer into trunks of both living and dead trees. The holes created by foraging woodpeckers are then used by a variety of other creatures. find out more... |
birds -- page 3 of 5
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[insects] [pests]
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