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 ...

A flapping-wing robot that can both swim underwater and fly through the air is helping scientists rethink how diving birds manage life in two ...

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 ...

Flapping-wing ornithopter drones may potentially be more agile and energy-efficient than their fixed-wing counterparts, but most of them still can't loiter in one spot. A new model addresses that ...