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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 »

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Topics & Themes:  ecology, migration, science

Radar Ornithology with Dr. Cliff Mass

Did you know that weather radar can track the migration of birds? Dr. Cliff Mass, Professor of Atmospheric Sciences at the University of Washington, describes the radar images from a massive migration through the Puget Sound region of Washington State. Shortly after midnight on September 8, huge... read more »

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Topics & Themes:  migration, science

Purple Martins Head South to the Amazon

The Purple Martin is the largest swallow that nests in the US and Canada. It’s also one of our most beloved birds, judging by how many people put up nest boxes for them! During fall, Purple Martins from western North America migrate to a distinct wintering area in southeastern Brazil — a travel... read more »

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Topics & Themes:  migration, science

Counting a Million Raptors Over Veracruz

A “river of raptors” flows through Veracruz State in eastern Mexico during the month of September. In Living on the Wind, Scott Weidensaul describes his experience counting the birds: “Nothing in a lifetime of birdwatching had prepared me for this spectacle,” he says. “As our sense of numbed... read more »

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Topics & Themes:  migration

Bar-tailed Godwit Migration, Featuring Nils Warnock

During fall migration, a Bar-tailed Godwit like this one will fly over the Pacific Ocean, making a non-stop flight of 7,000 miles from Alaska to New Zealand. These amazing birds can achieve their epic journeys only after fattening up – along the coast of Alaska in fall, or along the Yellow Sea... read more »

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Topics & Themes:  migration

Evolution of European Blackcaps - Featuring Mike Webster

Nature is evolving constantly. Dr. Mike Webster of the Cornell Lab of Ornithology describes an example of rapid evolution and adaptation from the world of birds. He says the European Blackcap, a species of warbler, used to breed in Germany during the summer and migrate to Spain in the winter. But... read more »

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Topics & Themes:  ecology, human interaction, migration

Rufous Hummingbirds Head South

Right now in the Northwest, male Rufous Hummingbirds are heading south. By late July, they will pour into southeastern Arizona on their way to wintering areas in Mexico. The females and their offspring will leave later in the summer, some lingering until mid-September. Along the way, they will... read more »

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Topics & Themes:  citizen science, migration

Shorebirds - Masters of Long-Distance Migration

Dr. Dennis Paulson, BirdNote’s chief science advisor, is an expert on shorebirds. He says new technology is revealing fascinating information about migration routes. (For instance, the alpha-alpha flag, unique to this Whimbrel, tells us the bird was banded in Canada.) For many shorebirds,... read more »

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Topics & Themes:  migration, science

Geolocators Track Migrating Songbirds

With many migratory songbirds in North America declining at an alarming rate, it’s important to map their travels – and learn what they require for food and shelter.Until recently, it was difficult to monitor the precise journey of migratory birds. Thanks to the development of geolocators like... read more »

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Topics & Themes:  migration, science

Researching High-flying Bar-headed Geese

Twice a year, Bar-headed Geese migrate over the Himalayas, the tallest mountains on the planet. Flying requires ten to twenty times more oxygen than resting. Yet at this altitude, there’s only half to one-third of the oxygen. Animal physiologist Jessica Meir says these amazing birds utilize “a... read more »

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Topics & Themes:  migration, science

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