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 ...

According to bird experts Kenn and Kimberly Kaufman, much about bird flying is dependent on the species, season, and what else the bird is doing. Songbirds that feed on insects vary in the elevation ...

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, ...