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migration

Trans-Gulf Migration and Oil Platforms

Every spring, birds like this Orchard Oriole and many others are arriving after a long flight across the Gulf of Mexico. Beginning in 1998, a handful of observers -- each assigned to a different oil platform -- began to monitor bird migration between March and May, as far as 100 miles out in the... read more »

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Topics & Themes:  migration, science

Migration

Migration happens once every year. And then again maybe six months later.Depending on several factors, at most times of the year, there are many birds on the move. Some are merely altitudinal migrants, descending when the weather turns fowl in the mountains. The large majority undertake a twice... read more »

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Topics & Themes:  migration

Follow Island Girl with Bud Anderson

"Peregrine" means "wanderer." And Island Girl, a Peregrine Falcon, has made the 18,000-mile round-trip journey from the high arctic of Canada to southern Chile three times. Bud Anderson of the Falcon Research Group calls her "a master of the air." Using satellite telemetry, he invites people to... read more »

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Topics & Themes:  migration, science

Mapping Songbird Migration with Geolocators

Devices called geolocators are giving us new insights into how, when, and where birds migrate. They record daily changes in light levels at different latitudes and longitudes by recording the time of each sunrise and sunset. And by attaching them to migrating birds - like this Red Knot -... read more »

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Topics & Themes:  migration, science

Dancing with Birds - With Heather Murphy and Rhona Baron

Like migratory birds, the dances of North America travel from nation to nation. Beautifully colored songbirds may breed in the far north, but they winter in Central and South America. During a Zumba class, Heather Murphy realized this combination of dance, music, and culture might be used to... read more »

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Topics & Themes:  migration, music

High Island, Texas

Each spring, millions of songbirds migrate north from the New World tropics to nest in North America. It takes 15 hours on average to cross the roughly 500 miles of the Gulf of Mexico. If wind or rain slows the crossing, the birds are worn out and famished when they reach land. What will they... read more »

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Topics & Themes:  migration

Dry Tortugas Archipelago

From a bird's perspective, the Dry Tortugas, a cluster of islands in the Gulf of Mexico, can be a life-saver. Millions of migratory songbirds fly north across the Gulf and Caribbean each spring, headed for North America. If they run into heavy wind and rain blowing down from the continent, the... read more »

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Topics & Themes:  migration

Navigating by Earth's Magnetic Field

How do birds navigate? They steer by landmarks and by the sun and stars. A keen sense of smell helps some birds chart their course. And, it turns out, migrating birds also find their way by responding to the magnetic field of the earth. Iron-rich magnetic crystals inside the upper beak of this... read more »

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Topics & Themes:  migration, science

Vaux's Swift Roost

The largest known swift roost in the world - over 30,000 Vaux's Swifts - can be seen each September in Portland, Oregon, in a chimney at Chapman Elementary School. Portland Audubon hosts a Swift Watch. Learn more about this program and be sure to see a video of the swifts swirling down the... read more »

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Topics & Themes:  migration

Vernal Equinox - East

This Carolina Wren doesn't know the precise instant of the vernal equinox of course. But the wren senses the growing hours of daylight through a surge of hormones, which tell it it's time to sing. Both science and folklore tie Spring to the renewal of nature, as the world awakens from the long,... read more »

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Topics & Themes:  migration, vocalization

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