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endangered species

Loggerhead Shrike

Loggerhead Shrikes are found across much of the United States in open country, like pasture and sagebrush. Male shrikes are well known for impaling their prey on thorns, creating a larder that may help impress potential mates. But pesticides and the loss of habitat to residential and commercial... read more »

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Hawaiian Goose - New Hope for the Nene

On the grassy edge of one of the ponds at Hanalei Wildlife Refuge, we find a Nene -- or Hawaiian Goose -- a small goose found nowhere else but Hawaii. The Nene is the only state bird that is also an endangered species. Once common in the Hawaiian Islands before the first humans landed here, they... read more »

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Topics & Themes:  science

The Peregrine Falcon Makes a Comeback

Rachel Carson's Silent Spring, which came out in 1962, linked the pesticide DDT to the decline of many birds, including songbirds. But Peregrine Falcons and other raptors had declined, too. When the birds ingested DDT, it caused their eggshells to thin and break under the weight of the incubating... read more »

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Counting Kirtland's Warblers - Interview with Karen Markey

Learn about one of the first species to be listed as endangered after Congress adopted the Endangered Species Act in 1973: The Kirtland's Warbler. Karen Markey and others make an annual census of the birds, to help federal and state agencies determine how well the recovery plan for the warblers... read more »

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Lewis's Woodpeckers and Pine Forests

A century of logging and fire control has taken its toll on the mature pine forests of the West, the preferred nest site for this Lewis's Woodpecker. But there is hope. Lewis's Woodpeckers also nest along rivers in large cottonwoods, trees of little value for timber. Also, many remaining tracts... read more »

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Alala - The Hawaiian Crow

'Alala, also known as Hawaiian Crows (although they're more like ravens), were once common on the Big Island of Hawaii. But the birds suffered from persecution by humans, degraded habitat, and disease, and by 2002, no 'Alala were left in the wild. Today, captive breeding is under way in Hawaii,... read more »

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Topics & Themes:  science

Making a Home Among the Saguaros

In the arid Arizona desert, where cacti thrive but trees are scarce, the Gila Woodpecker and this Gilded Flicker carve out nest cavities in living saguaros. Tall, old saguaros may be pocked with twenty or more nest holes, bearing witness to decades of woodpecker families. The woodpeckers excavate... read more »

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Topics & Themes:  nesting

American Woodcock - Timberdoodle

As the sun sets on a northern Midwest forest, an American Woodcock walks slowly from the cover of the forest to a nearby clearing. Then, the woodcock takes off on a courtship flight. At the apex of its flight, the woodcock circles, then descends in a slow spiral, putt-putting like a tiny car... read more »

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Topics & Themes:  breeding display, vocalization

California Condor

During the days of mammoths and saber-toothed cats, California Condors thrived over much of the continent. Today, they're one of the most endangered birds in the US. The condor's main survival problem is high mortality due to lead poisoning. Condors eat animal carcasses, often containing lead... read more »

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Landowners Help Endangered Sage-Grouse

When it comes to saving endangered species, habitat is nearly always critical. For this Greater Sage-Grouse, a bird now endangered in parts of its range, it comes down to preserving stands of healthy sagebrush. And essential to saving sage habitat is the cooperation of landowners. Recently, Rob... read more »

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Topics & Themes:  environmental champion

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