You can tell a lot from a tiger’s roar. A researcher in Texas is using the sound of tigers’ vocalizations to track and protect them in national parks and in the wild around the world. By monitoring tigers acoustically, researchers can track their location and know whether a tiger is a male or female, its weight, and other characteristics. Listen to learn why this project is helping tigers in captivity and in the wild.
Story Length: 4:11
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December 30, 2015
7:21
Humpback whales sing and continually change their songs. In the 1960’s Navy engineers used underwater microphones to record sounds in the ocean to locate enemy ships. They happened to also record whale sounds. Scientists studied these sounds and discovered that only male humpback whales sing and they gradually modify their songs. The humpback’s songs have patterns and rhythms and are not just random sounds. Listen to hear more about how sound is used to learn about the life of whales.
Read MoreDecember 24, 2015
7:22
Ornithologists listening to various bird calls were surprised to discover that different animal species shared the same warning call. For instance, squirrels closely mimic a bird’s warning call. These scientists record sounds in the wilderness all over the world to learn about animal communication. In this story they share different ways they provoke the birds into making bird calls so that they can be studied. Listen to hear about the discoveries of scientists who listen closely.
Read MoreDecember 23, 2015
7:18
Elephants roar and stomp and make loud sounds. They also make other sounds too low for humans to hear. Researchers are studying the secret signals of elephants by living among them in Africa. The audible calls are just a fraction of the elephants’ conversation. They have a longer ear canal, bigger eardrums and can hear much lower frequencies than people can. Researchers have matched the rumbling sounds with specific behaviors, such as looking for a baby elephant or greeting each other. Listen to hear more about the hidden language of elephants.
Read MoreDecember 22, 2015
7:18
Some animals and insects communicate at frequencies that humans can’t hear. Elephants and whales, for example, can find their families and mates using different frequencies. Crickets create vibrations that identify their species to other crickets, which helps to increase the cricket population. Sounds that people don’t pay attention to or sounds that people can’t even hear are all around us. Listen to this story to hear more about these sounds and how they have evolved to help animals survive.
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