Birds fly more efficiently by folding their wings during the upstroke, according to a recent study. The results could mean that wing-folding is the next step in increasing the propulsive and ...

Loons, gulls, puffins, and petrels are some of the 100 species of birds that can both fly and swim. These diving birds can plunge in water to swim after prey, and leap back into the air to fly away.

A lightweight robot modeled on diving birds can swim underwater, break through the surface, and continue flying without using feet or propellers. The feat exposes a difficult mechanical compromise ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists built a flapping wing robot that can swim underwater, fly through the air and launch itself out of water to study how ...

Getting the device to transition between air and water seamlessly was one of the most challenging aspects of the work. Raphael Zufferey Many birds can traverse both air and water, transitioning ...

It might not be immediately obvious just how birds could evolve something as complex as the wings needed for flight. But that’s just it: flight was basically incidental to the real adaptation. The ...

Loons, gulls, puffins, and petrels are some of the 100 species of birds that can both fly and swim. These diving birds can plunge in water to swim after prey, and then leap back into the air to fly ...