Add Yahoo as a preferred source to see more of our stories on Google. Swift bird in flight with a colorful sky in background. Black swallow. Image with copy space.© Marco Lissoni/Shutterstock.com The ...

A migratory bird that almost never stops flying sometimes slips into a brief, hibernation-like state inside its nest during chilly breeding periods. When not breeding, the common swift (Apus apus), a ...

The common swift (Apus apus) can fly more than 500 miles in one day – significantly more than previously thought, a new study based on tracking data reveals. Scientists had thought the species travels ...

The physiology of Apus apus is highly specialized, enabling essential functions, such as feeding, drinking, resting, and even mating, to occur almost entirely while airborne Remaining airborne for up ...

Swift bird in flight with a colorful sky in background. Black swallow. Image with copy space.© Marco Lissoni/Shutterstock.com Of all the marvels of the natural world, few are as astonishing as the ...