BirdNote Daily

Brown Pelicans fly just above the surface of the water. They circle high, then diving headfirst, plunge under water to catch fish. But doesn't that hurt? Several adaptations protect pelicans as they dive. First, they have air sacs beneath the skin on their breasts, which act as cushions. Pelicans have also learned that a steep dive angle, reduces aiming errors caused by water surface refraction.

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Gambel’s Quail and California Quail are both well known for the comma-shaped tuft of inky black feathers poised atop the crown of their heads. For both species, this decorative “topknot” is formed from six individual feathers that contour together into a single structure. Yet they’re hardly the only quail with a fashionable updo. Though we don’t know exactly why so many quail evolved elaborate headdresses, they may help the birds attract a mate or intimidate competitors.

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By late summer, the male Mallard’s need for fancy feathers to attract the females has passed. These birds have molted, and their bright feathers are replaced with mottled brown ones. Subdued colors help camouflage the male ducks, protecting them from predators. Come fall, the male Mallards will molt again and become the colorful dandies we remember.

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Burrowing Parakeets excavate deep nest tunnels in sandstone and limestone cliffs in Argentina and Chile. The colony’s many tunnels zigzag and interconnect, creating an intricate labyrinth. Their nesting colonies are among the largest of any parrot — one in Argentina has 70,000 birds!

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Most birds possess the ability to see color. But birds can also see in the ultraviolet spectrum! Hummingbirds — like this Violet-crowned Hummingbird — may zero in on certain flowers because their petals strongly reflect in the ultraviolet range. Migrating birds may use ultraviolet light to navigate on overcast days, because the sun's ultraviolet rays pass through the cloud cover.

This episode is sponsored by Bird Conservancy of the Rockies. The world needs birds. To learn more about their work and mission, visit birdconservancy.org.

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Found in Australian forests, male Superb Lyrebirds can mimic calls well enough to convince the bird they’re imitating that the lyrebird is one of their own! While males sing to attract mates, females imitate the calls of predators, which could help frighten other birds off their territories.

Listen to this episode in Spanish here.

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National Battlefield Parks are grassland habitats worth writing home about. Tall grassy fields aren’t typically considered beautiful, much less valuable to conserve. But battlefield monuments and military parks are maintained as historic sites, with the side-effect of preserving excellent habitat. Today, rather than the roar of cannons, battlefields like Gettysburg, Antietam, and Monocacy are filled with the sounds of grassland songbirds.

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Brooklyn’s Prospect Park covers more than 500 acres — many of them covered in trees. One bird species that calls the park home is the strikingly beautiful Blue Jay, which nests, forages, and roosts in trees. In the eastern U.S., you can invite Blue Jays into a small yard with just a decent tree or two. It’s the volume of branches and leafy habitat overhead that matter to the jays.

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If you’re trying to spot a bird, you should look up — right? While it’s true that there are many beautiful birds to see in the sky, plenty of species are easier to find by keeping your eyes and ears to the ground. You may encounter towhees using their powerful feet to kick up leaf litter beneath dense underbrush. American Pipits and small shorebirds often look like clods of mud before they start running across a roadside field. There are even some colorful warblers who prefer to skulk!

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The Steller's Jay is a jay... and it's blue. But it's not a true Blue Jay with a capital "B." The bona fide Blue Jay is primarily a bird of eastern North America. Blue Jays and the Steller's Jays have similarly raucous personalities. Like their larger cousins, the crows, ravens, and magpies, they are intelligent opportunists.

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