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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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Mysterious Disappearance of Evening Grosbeaks

In 1987, when Project FeederWatch began, Evening Grosbeaks were among the most common birds at birdfeeders during the Northeast winter. Now they're completely absent in many of those same areas. In the West, too, they're showing up in reduced numbers. Why have so many Evening Grosbeaks... read more »

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Topics & Themes:  birdfeeding, citizen science

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

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

Eastern Wood-Pewee and Eastern Deciduous Forest

Each year, the plaintive song of the Eastern Wood-Pewee carries through the forests of eastern North America. For the past 25 years, the number of Wood-Pewees has fallen. But providing economic incentives for private landowners to save forests can help. So can enacting policies that promote smart... read more »

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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

A Crossbill's Beak Does the Job

A close look at this Red Crossbill reveals a curious adaptation. The long tips of the upper and lower bill don't meet, but instead cross over each other. The bills of young birds are not crossed at hatching, but cross as they grow. The Red Crossbill bites between the scales of a cone and pries... read more »

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Saw-whet Owls Hoot and Hoot

Northern Saw-whet Owls are common in forests across southern Canada and the northern U.S. In early autumn, many move southward, making a large concentration especially in the region of the Great Lakes. To our ear, the "advertising call" of the male, made mostly in spring and summer, sounds... read more »

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Topics & Themes:  vocalization

An Owl Is Mobbed

A pint-sized Northern Pygmy-Owl, not much bigger than a pine cone, hoots from a tree-top on a winter morning. Before long, this diurnal owl - a determined predator of small birds and mammals - will attract a mob of a dozen or more small birds. Mobbing may be a collective response to danger. But... read more »

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Winter Field Notes - Reflections by Heather Murphy

Heather Murphy, a naturalist, watches for birds with the trained eye of a wildlife biologist, then makes a few field notes. From her journal: "I hear tzeet-tzeet-tzeet. Fast movement. Ah, a tiny kinglet. Which kinglet? Hm.m.m. No leaves anymore, so I easily see an olive-green back. And through my... read more »

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Topics & Themes:  reflection

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