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migration

Swans Come Calling

Trumpeter Swans land in a plowed field to forage for remnant potatoes, grain, and other waste crops. This swan is among the largest of all waterfowl; the Tundra Swan is somewhat smaller. These swans migrate in family groups each fall from nesting sites in Canada and Alaska. Learn more about these... read more »

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Topics & Themes:  migration

Swallows Return to Nest

Each spring, eight species of swallows — including this Barn Swallow — migrate north from the tropics to nest in North America. Tree Swallows and Purple Martins are especially dependent on man-made nestboxes. Tree Swallows nest over much of the continent, while Purple Martins are most prevalent... read more »

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Topics & Themes:  migration, nesting

Tree Swallows March North

Every March sees the annual spring migration of Tree Swallows. The swallows spend the winter along the Caribbean, in Central America, and in the warmest parts of South Texas and California. Some will nest as far north as northern Alaska and Canada. Tree Swallows nest only in cavities, such as old... read more »

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Topics & Themes:  backyard sanctuary, migration

Tune Up Your Ears - East

By March in the East, cardinals and other songbirds that don't migrate are already singing heartily to attract mates. Many other birds - including this Yellow Warbler - will return north from the tropics in April and May, announcing themselves in song as soon as they arrive in nesting areas. Now... read more »

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Topics & Themes:  migration, vocalization

Tanagers - Coffee Birds

This Scarlet Tanager (R), its cousin the Western Tanager (L), and your latte have a connection. Much of the birds' prime wintering habitat has been turned into coffee plantations. When shade-giving trees are cut down to grow coffee in direct sunlight, the tanagers' winter habitat is also removed.... read more »

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Topics & Themes:  migration

Swainson's Hawks Migrate South

In autumn, hundreds of thousands of Swainson's Hawks migrate to South America. With the help of a satellite tracking device, let's follow an individual male. On September 14, he leaves his breeding territory near Hanna, Alberta; reaches southwest Saskatchewan by September 23; passes through... read more »

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Topics & Themes:  migration

Tune Up Your Ears - West

By March in the West, Song Sparrows and other songbirds that don't migrate are already singing heartily to attract mates. Many other birds - including this Warbling Vireo - will return north from the tropics in April and May, announcing themselves in song as soon as they arrive in nesting areas.... read more »

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Topics & Themes:  migration, vocalization

Birds Return with the Light

Winter's weak light is finally beginning to strengthen, and some birds, long absent, have begun their journeys north. Tree Swallows, such as this one, phoebes, bluebirds, and more return with the light. So be of good cheer, the birds and Spring are coming back. You can learn more about this... read more »

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Topics & Themes:  migration, vocalization

Wilson's Phalarope

If any bird is an anomaly, it's the Wilson's Phalarope. In a birdbook, Wilson's Phalaropes are found among the sandpipers. But they forage while swimming. Spinning like tops, they create an upwelling, pulling food to the surface. The breeding of Wilson's Phalaropes is anomalous, too. Females are... read more »

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Topics & Themes:  breeding display, migration

Southwestern Willow Flycatcher

Willow Flycatchers nest across the northern two-thirds of the U.S. and southernmost Canada. A subspecies, known as the Southwestern Willow Flycatcher, nests in the Southwest, as far east as Texas. The Southwestern Willow Flycatcher was listed as endangered in 1995. It's just one of 300 bird... read more »

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Topics & Themes:  migration

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