The eye-popping colors and designs on butterfly wings are not just for show, but are an important adaptation that helps the insects fend off predators. Some butterflies have wings containing toxins, signaling danger to birds and other hungry hunters. Others fold their wings for camouflage or flutter them so the colors confuse birds giving chase. Listen to hear an insect scientist explain more about the amazing ways butterflies’ colorful wings help them survive.
Story Length: 4:47
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Populations of migrating birds have declined sharply, and scientists are trying to figure out why. This audio story features an interview with a biologist and bird expert about how and why scientists are tracking migratory birds and what people can do to help them. Listen to hear about how tagging birds with radio transmitters can help wildlife biologists understand their behavior and discover why migratory birds are disappearing.
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Animals have adapted to their environments in a wide variety of ways and developed a range of survival strategies. This audio story highlights a selection of interesting animal ”superpowers,” many of which offer ecological advantages to both predators and prey. Listen to hear about the difference between poison and venom and learn how two particularly lethal creatures compare: the box jellyfish and the golden poison frog.
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A variety of adaptations help animals survive the winter, when temperatures drop and food is scarce. Some migrate, some change how they eat and find ways to stay warm, and some hibernate, essentially going to sleep for many months. Listen to learn about how different animals adapt to the changing seasons and find out what happens when bears hibernate.
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