BirdNote Daily

Near their frog-like mouths, Eastern Whip-poor-wills sport long, thin feathers that look a little like cat whiskers. Called rictal bristles, scientists are still investigating what these feathers do. They might help nocturnal birds sense air currents in dark environments, allowing them to orient themselves in three dimensions, dodge obstacles, and catch their prey. It’s also possible that whiskery bristles do different things for different birds!
More info and transcript at BirdNote.org.
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Not all owls live in the deep woods. Many Great Horned Owls make their homes in urban areas. Though mostly nocturnal, Great Horned Owls are also active early in the morning and just after sunset, offering a chance to see them hunting for rodents and other prey. Look for their distinctive horns, which are really just feather tufts. At night, you might hear their deep, syncopated hoots echoing through the neighborhood. Avoiding toxic rodenticides helps protect Great Horned Owls and other urban raptors.
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Seabirds have no problem drinking sea water. The salt they take in is absorbed and moves through their blood stream into a pair of salt glands above their eyes. The densely salty fluid is excreted from the nostrils and runs down grooves in the bill. As the drop gets larger, the bird shakes its head to send the salt back to the ocean. A seabird's skull has a pair of grooves for the salt glands right over the eyes.
More info and transcript at BirdNote.org.
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In the UK for years, milk came in bottles with foil caps. Great Tits, a common songbird, learned how to peck through the foil. The skill spread. But how? Researchers trained Great Tits in different ways of opening a box and re-released them. Knowledge of how to open the box spread rapidly, with most birds copying the trained bird in their group. In a follow-up study, the researchers made one method of opening the box more effective. Many birds quickly switched to the better method, suggesting the tits can stand up to peer pressure if they see there’s a better way of doing things.
More info and transcript at BirdNote.org.
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During migration, Snow Geese gather in the tens of thousands. They coordinate their movements, flying in a big, compact flock, which makes it harder for a predator to pick off a single bird. It is truly something to see.
More info and transcript at BirdNote.org.
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