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migration

Red Knot Flies to the Moon and Back

A trip to the moon would mean a flight of 239,000 miles, roughly the same as circling the Earth 10 times. This Red Knot, named B95 for its band number, is nicknamed "Moonbird." Why? This male sandpiper was first banded in 1995 and spotted again -- on his migration through New Jersey -- in May... read more »

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Topics & Themes:  migration, ornithology, science

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 »

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Topics & Themes:  ecology, 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 »

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61 Tons of Robins!

In winter, flocks of American Robins spend the night together. Typically, a few dozen to a few hundred birds roost communally in trees or an old barn, or under a bridge. But larger robin roosts can number in the thousands, or even tens of thousands! In 2007, observers near St. Petersburg, Florida... read more »

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Topics & Themes:  ecology, migration, science

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 »

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Topics & Themes:  breeding display, ecology, migration, plumage

Yellow-rumped Warbler - The Winter Warbler

By winter, most warblers have migrated south. But the Yellow-rumped Warbler, which birders affectionately call “butterbutt” is a lesson in adaptation, notes Bryan Pfeiffer, a writer, naturalist, and educator who lives in Vermont. “In winter, when most of their kin are enjoying insects in the... read more »

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Topics & Themes:  ecology, migration, ornithology

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 »

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Topics & Themes:  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 »

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Topics & Themes:  migration, science

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

Meet the South Polar Skua, a predatory seabird. During summer in Antarctica, South Polar Skuas feed their young on 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, gulls, or terns ... read more »

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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 »

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Topics & Themes:  birdfeeding, migration

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