![]() ![]() This happens when they call to a mate or defend their turf. These reptiles are another relative of dinosaurs. “But it can still be extremely frightening.” Take crocodiles, for example. “It’s not a roar, which is an open-mouth sound,” says Clarke. It sounds like a note from a tuba or the rumble of a race car. ![]() This produces a deep boom in large birds like ostriches. “It expands like a balloon,” says Clarke. They make these closed-mouth calls by pushing air into a pouch in their throats. The researchers found that one-fourth of them sing with their beaks closed. If many different birds make the same noise, it could be a sign that their dinosaur ancestors did too.Ĭlarke’s team examined more than 200 bird species in a recent study. They observed many birds like ducks, robins, and emus. Clarke and her co-workers wanted to find out. Scientists think that the voices of dinos and birds were also alike. These features aren’t seen in all reptiles. They include feathers and the drive to care for their young. Birds and dinosaurs have many features in common. “They’re actually living dinosaurs,” says Clarke. They are dinosaurs’ closest living relatives. Real dinosaurs probably communicated very differently.Ĭlarke wanted to learn what dinosaurs might have sounded like. She studies ancient animals at the University of Texas at Austin.īut those cries are the creation of Hollywood sound artists. They sound like lions, tigers, and bears,” says Julia Clarke. What sounds do you think dinosaurs made? “In the movies, we always see dinosaurs making a lot of scary noises. “There’s a lot more we can learn if we take the time to listen.” Still, Clarke is hopeful that science can solve the puzzle. That makes it much harder to reconstruct what a dinosaur’s voice sounded like. So unlike their bones, these body parts rarely became fossils. The organs dinosaurs used to make sounds were made of soft tissue. “It’s likely dinosaurs shared this closed-mouth vocal behavior,” says Clarke.īut scientists don’t know for sure. When they’re calling to a mate or defending their turf, they growl with their mouths closed. In large birds like ostriches, this produces a deep boom, like a note from a tuba or the rumble of a race car. In a recent study, Clarke’s team examined more than 200 bird species. If many different birds make the same noise, it could be a sign that their dinosaur ancestors did too. To find out, Clarke and her colleagues observe all kinds of birds from ducks and robins to emus. Scientists suspect that the voices of dinos and birds were also alike. ![]() Birds and dinosaurs have many features in common, such as feathers and the drive to care for their young. Birds are dinosaurs’ closest living relatives. To learn what they might have sounded like, Clarke is studying animals that are alive today: birds. Real dinosaurs probably communicated very differently. But those cries are the creation of Hollywood sound artists. She studies ancient animals at the University of Texas at Austin. “In the movies, we always see dinosaurs making a lot of scary noises, like lions and tigers and bears,” says Julia Clarke. What sounds do you imagine dinosaurs made? Do you believe that a Tyrannosaurus blared with a thunderous roar? Do you think a Velociraptor let out a piercing scream? ![]()
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