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Birds are excellent adapters, evolving
both physically and behaviorally to exist in a variety of different
environments. While you may think of birds as being creatures of
the air, waterfowl are an example of birds adapting and thriving
in environments in which we may not expect to see them. Unlike perching
birds and birds of prey, waterfowl have webbed feet adapted to paddling
in the water, and secrete a special oil that, when groomed into
their feathers, helps keep them dry. Their diet, too, is suited
to a semi-acquatic life, and while some feed on the plants that
grow around water, others are skillful at diving and fishing.
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Waterfowl such as swans and ducks produce a special
oil near the base of their tail, which helps keep their feathers watertight.
The bird rubs its bill onto the secreting gland, and spreads the oil
across their feathers as they groom, making sure they're always ready
for another swim. |
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For more fun facts, click on the individual birds on the left of the page. |
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