Cool Critters: A trout with feathers – the American Dipper
The American dipper, a drab-looking bird no larger than a robin, is a splashy rarity: a songbird that swims and even walks underwater. This round-bodied gray bird with short wings and a stubby tail is ...
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What are birds?
Most birds use their wings to fly but some birds can’t fly such as penguins. They use their wings to swim underwater instead. There are lots of different types of birds and they all have ...
Natural History Museum%2c London5d
Ancient bird skull from Antarctica might be from early duck relative
The skull, from an ancient relative of ducks and geese known as Vegavis iaai, suggests that the key characteristics of modern birds were already in place 69 million years ago. Birds evolved from ...
MercoPress1y
Penguin Propulsion: The Physics Behind the World’s Fastest Swimming Birds
To maximize efficiency underwater instead of in the air, penguin wings are shorter and flatter than those of flying birds. The animals can adjust swimming posture by active wing feathering ...