migration

Long-distance Migration - A House of Cards?

Scott Weidensaul, author of Living on the Wind, says “. . . the longest, most amazing, most awe-inspiring migrations are the ones that are most delicately balanced. And if you perturb any of the supports on which it depends, the whole thing collapses like a house of cards.” Fortunately, the U.S.... read more »

RELATED
Topics & Themes:  ecology, migration

American Redstart - The Tale Is in the Tail

Who knew that this American Redstart’s feathers could reveal so much information about its life? For example, the more intense the color of a male American Redstart’s feathers, the better his chances of holding a good winter territory, which means access to good nutrition. Being well fed and in... read more »

RELATED
Topics & Themes:  migration

Recording Cerulean Warblers with Charlotte Goedsche

Since 1998, Charlotte Goedsche has been studying the Cerulean Warblers that breed in the mountains near Asheville, North Carolina. And she has learned some fascinating things! For example, Charlotte can identify individual Cerulean Warbler males like this one, by listening to their songs. She... read more »

RELATED

Bohemian Waxwings Wander South

In winter, when snow blankets the northern states, nearly all of the songbirds that graced the days of summer are gone. But there’s one special winter visitor that fills the absence: the Bohemian Waxwing. In autumn, waxwings wander south from the boreal forest into the northern states and along... read more »

RELATED
Topics & Themes:  migration

Hummingbirds - To Feed or Not to Feed?

Have you wondered about the right time to remove your hummingbird feeders during fall? Consider leaving your feeders hanging for a week or two after you’ve seen the last hummingbird of the season, just in case a late migrant stops by to fatten up. However, Anna’s Hummingbirds – like the one... read more »

RELATED
Topics & Themes:  birdfeeding, migration

Long-distance Champions of Migration - With Scott Weidensaul

Arctic Terns are the long-distance champions of migration. Thanks to satellite transmitters and geolocators, we know that some Arctic Terns travel more than 50,000 miles annually! Scott Weidensaul, naturalist and author of Living on the Wind, says these technology tools “make the issue of bird... read more »

RELATED
Topics & Themes:  migration, science

South Polar Skuas - Bullies of the Oceans - with Tom Johnson

Meet the South Polar Skua, a big, bad bully of the bird world. During summer in Antarctica, South Polar Skuas feed their young with the chicks of other seabirds. And once their breeding season ends, the skuas fly to northern oceans, such as the North Atlantic, to find large flocks of shearwaters,... read more »

RELATED
Topics & Themes:  migration

More Information than from 100 Years of Bird Banding

Geolocators are revolutionizing our ability to track migrating birds. When mounted on the backs of birds like this Common Swift, these tiny technological backpacks reveal fascinating information. For example, when researchers in Europe used geolocators to study Common Swifts, they discovered a... read more »

RELATED
Topics & Themes:  migration, science

The Importance of the Yellow Sea - With Nils Warnock

For shorebirds like Bar-tailed Godwits, Black-bellied Plovers, and Dunlin, mud matters. Few mudflats are more important than those of the Yellow Sea along the coast of China, and North and South Korea, where more than 70 species of shorebirds rest and feed. For several species of shorebirds,... read more »

RELATED
Topics & Themes:  ecology, migration

How Evolution Works, Featuring Dr. Mike Webster

After breeding in Alaska, some Swainson’s Thrushes migrate across Canada to the East Coast before turning south to Ecuador. Others migrate directly down the Pacific Coast to the same destination. Why are some are traveling twice the distance? Dr. Mike Webster of the Cornell Lab of Ornithology... read more »

RELATED
Topics & Themes:  ecology, migration, science

Pages