In the early 1800s, the Passenger Pigeon was one of the most abundant bird species in North America — possibly the world. But by 1910, the last surviving representative of the species was a bird called Martha at the Cincinnati Zoo. Despite attempts to revive the species through captive breeding programs, Martha outlived several unsuccessful suitors before succumbing to old age on September 1, 1914. Though today is a somber anniversary in the history of conservation, there’s no better time than now to take action to protect birds.

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In 1956, the Eisenhower Administration announced plans for the nation’s new interstate highway system. Planners foresaw 41,000 miles of superior highways, with a grassy border on either side and down the middle. The grassy areas created ribbons of wildlife habitat occupied by small mammals such as voles — favorite prey of the Red-tailed Hawk and other raptors, which are now common along many stretches of interstate. And there are now hundreds of thousands of other highway miles that offer equally prosperous hunting grounds for birds.

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In summer, many shrubs bear fruit that birds find irresistible. Elderberries, serviceberries, blackberries, dogwood berries, mulberries, and currants attract many species of birds, including waxwings, tanagers, robins, warblers and this Rose-breasted Grosbeak. Plants offer this bounty in exchange for birds’ help in distributing their seeds. And in dispersing pollen, birds, bats and insects also help to guarantee a new crop of berries!

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In the desert Southwest, water can be scarce. Yet some birds, like this Black-throated Sparrow, thrive in a scorching landscape. The birds obtain moisture from foods like nectar and fruit, as well as insects and other prey. They tuck into the shade in the heat of the day, so they won’t lose water in panting. And they have extremely efficient kidneys, so they excrete almost no liquid. Amazing!

The soundscapes featured in this episode were recorded by Gordon Hempton and provided courtesy of QuietPlanet.com.

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For the majority of the year, most birds stay under 500 feet. During migration, many species fly at 2,000 to 5,000 feet or above, using prevailing winds to assist them. And some birds go even higher! In 1973, a Rüppell’s Griffon set the world record by soaring to 37,000 feet.

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In this episode, ornithologist J. Drew Lanham reads a letter he has written to a wood-pewee, a flycatcher with an “understatedly simple and definitive” song that says the bird’s name.

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Long-billed Curlews are the largest shorebirds in North America. In his courtship display, the male Long-billed Curlew flies a series of arcs across the sky, calling as he goes. Outside of the breeding season, they roost and forage in mixed flocks. When the flock is disturbed, the curlews’ loud flight calls sound the alarm that a potential predator is near.

This episode is brought to you in loving memory of former BirdNote Board member Tom Darden, with thanks to his family for their support.

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The colorful feathers and loud songs of male songbirds often catch a birder’s attention first. Observing females often means birding more slowly, noticing subtle differences in plumage and behavior, says Joanna Wu, who’s part of a group called the Galbatrosses that’s encouraging birders to spend more time identifying female birds. Fellow Galbatross Purbita Saha says that watching for females can help us understand birds on a deeper level by observing them as individuals rather than just species.

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David Sibley’s paintings connect millions of people with the lives of birds. His talent in observing and portraying birds culminated in The Sibley Guide to Birds. Sibley describes how he learned to sketch and illustrate birds such as this Townsend’s Warbler: "I spent years in the field, just traveling and birding and sketching," he says. “The drawing was so important to me, that there was never any question in my mind of continuing to paint the birds. It’s how I study the birds." Watch David Sibley sketch a Townsend's Warbler in the BirdNote studio!

Support for BirdNote is provided by Marjorie and Ed Ringness from Seattle, Washington — and generous listeners around the world. 

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Some birds, such as the Northern Bobwhite, get their name from their songs or vocalizations: "Bobwhite! Bobwhite!" The Killdeer is another bird named for its song: "Kill-dee, kill-dee, kill-dee." There are others. "Poorwill, poorwill, poorwill," says this Common Poorwill. This bird is the cousin of the Whip-poor-will, another bird that calls its own name.

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