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 ...

Swifts practically live in the sky. These birds skip land for nearly a year, doing everything midair, from eating to sleeping. They travel thousands of miles without ever stopping to perch. Scientists ...

SAN LUIS VALLEY, ALAMOSA COUNTY — The sun was not up yet, but Rob Sparks and Colin Woolley were changing into their waders and rubber boots before heading on a short hike on a recent summer morning.

Squadrons of small sooty-brown, sickle-winged birds called chimney swifts zip through the air in rapid twists and turns while gobbling up flying insects. Their 5-inch-long bodies taper at both ends, ...

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 ...