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endangered species

Aldo Leopold and the Field Sparrows

The Field Sparrow was the first bird song Aldo Leopold awoke to on his farm in the 1940s. In his Sand County Almanac, a classic of conservation and nature writing, Leopold brought to life scenes of nature, a month at a time. Field Sparrows aren't as common today as they were in Aldo Leopold's day... read more »

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Topics & Themes:  vocalization

Marbled Murrelets

In recent decades, the number of Marbled Murrelets, a seabird of the Pacific coast, has declined. Scientists in Canada and the US have analyzed the chemical composition of murrelet feathers - some from birds carefully preserved since 1894 by the Burke Museum in Seattle. The analysis shows that... read more »

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Topics & Themes:  science

Groove-billed Anis, Communal Nesters

Groove-billed Anis gather in loose groups. And with good reason. They nest communally. As many as four or five pairs of birds may use one nest, a bulky cup of twigs lined with fresh leaves. When the dominant female ani begins to lay her own eggs, the other females lay simultaneously. Up to 20... read more »

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Topics & Themes:  nesting

Spring Birds Arrive in the Eastern Forest

May in an Eastern hardwood forest, and the chorus of spring birdsong is nearing its peak. The Carolina Wren, a year-round resident, has been singing since the end of winter. The resounding notes of this Ovenbird let us know it has returned safely from Belize, after a long flight across the Gulf... read more »

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Topics & Themes:  migration, vocalization

Cerulean Warblers Link Conservation on Two Continents

In winter, the Cerulean Warbler forages in tree-tops of the Andes Mountains. In May, at the other end of a 2,500-mile migration, the very same bird sings from the tree-tops in the Appalachian Mountains. The Cerulean Warbler is one of the most threatened birds in the US. American Bird Conservancy... read more »

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Topics & Themes:  migration

Condor #23 and Lead

California Condor #23 is the hero of the California Condor Restoration Project. The project has worked for 30 years to reintroduce captive-bred condors into the wild. Number 23 and his mate were the first released condors to successfully raise a chick on their own. Yet today, #23 sits alone. Two... read more »

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Boreal Chickadees Stay Home for the Winter

Boreal Chickadees live in the boreal forest year-round. How do they survive the harsh winter? First, during summer, they cache a great deal of food, both insects and seeds. Then in fall, they put on fresh, heavier plumage. And their feathers are denser than most birds', creating a comfy down... read more »

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Bar-tailed Godwits - With David Melville

In our autumn, Bar-tailed Godwits fly non-stop for nine days across the Pacific, to reach New Zealand from Alaska. Each spring, the birds make the trip north to breed. But this time, they stop before they reach Alaska, to refuel on the shores of northeast China and the Korean peninsula.... read more »

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Topics & Themes:  environmental champion, migration

Crested Caracara

The Crested Caracara, one of North America's most charismatic birds of prey, is common in Texas, and an isolated population lives in Florida. They stride through the grass on long legs, as they hunt for small animals of all kinds. Many Mexicans honor the caracara as their national symbol,... read more »

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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

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