How do Black-capped Chickadees manage to survive the rigors of winter at high latitudes? For survival, chickadees have three things going for them: they're insulated, they're active, and they have a good memory. Thanks to a half-inch coat of feathers, the Black-capped Chickadee maintains…

For two decades Julia Parrish of the University of Washington has studied the seabirds - like this Common Murre - of the Pacific Northwest Coast. What are her conclusions after 20 years? "I have been so often surprised and proved wrong. I'll have a concept or hypothesis, make a prediction…

Father Tom Pincelli is a Catholic priest known to many as "Father Bird." He's a birder and conservationist in the Lower Rio Grande Valley in Southern Texas. One of his favorite birds is this Green Jay. The Rio Grande Valley Birding Festival starts today. Can't make it to Texas? There may…

A California landscape - rolling hills dotted with oak trees. One year-round resident is the Oak Titmouse. In 1985, a pathogen called Sudden Oak Death began attacking California oaks. As the oaks die, they're cut down in an effort to stop the spread of the pathogen. But Oak Titmice require…

Photographer and naturalist Paul Bannick, whose photos appear frequently on this website, has spent a lot of time observing woodpeckers and owls, including this Great Horned Owl. Paul notes: "Woodpeckers are called 'keystone' species...a species which alters its habitat to the benefit of…

Have you ever wondered how some migrating birds return to the same location, year after year? Do they learn from their parents, or do they just know how to migrate? Some birds (like this Bar-tailed Godwit) have an innate homing ability, while others follow their parents. The Bar-tailed…

Hawaii has more bird species in danger of extinction than anywhere else in the United States. George Wallace of American Bird Conservancy explains that a long period of evolution in isolation gives rise to specialized island species. Birds that nest on the ground don't have any natural…

Thousands of hummingbirds - including these Ruby-throats - are now in southward migration. Hummingbirds that summer in the western US will arrive in the mountains of southern Arizona. (Ruby-throats take a more easterly route.) Countless hummingbird feeders provide continuous nectar in this…

On the grassy edge of one of the ponds at Hanalei Wildlife Refuge, we find a Nene -- or Hawaiian Goose -- a small goose found nowhere else but Hawaii. The Nene is the only state bird that is also an endangered species. Once common in the Hawaiian Islands before the first humans landed here…

Gavin Shire, Communications Director for American Bird Conservancy, became an ultralight pilot while working with Operation Migration. The project is teaching endangered Whooping Cranes, raised in captivity, the route to migrate between Wisconsin and Florida. The birds are trained to…