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.More info and transcript at BirdNote.org.Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.

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!More info and transcript at BirdNote.org.Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.

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.More info and transcript at BirdNote.org.Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.

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.More info and transcript at BirdNote.org.Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.

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.More info and transcript at BirdNote.org.Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.