Why do some birds have webbed feet?
Quick Answer
Webbed feet increase surface area, making it easier to paddle through water. They are a classic adaptation for swimming birds such as ducks, geese, and gulls.
The Full Story
Webbing between the toes acts like a built-in paddle. When the bird pushes its foot backward in water, the membrane moves more water and creates stronger thrust than separate toes would. This makes swimming, diving, and takeoff from water more efficient. Webbed feet are common in waterfowl and many seabirds, but the exact shape varies with lifestyle; some birds have partially webbed feet, while others have fully webbed ones. The trait is a straightforward example of how anatomy follows habitat.
Key Facts
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"Bird feet are basically natural paddles — and some are built for serious swimming."
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