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Loud mouths.

A group of puny primates called tarsiers living in the Philippines have long baffled scientists. The reason: The animals sometimes open their mouths as if to make a noise, but no sound comes out. Now researchers have learned that the species, Tarsius syrichta, actually produces ultrasonic screeches that are well above the range of human hearing.

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Marissa Ramsier, a primatologist at Humboldt University in California, studied the animals' high-pitched calls. She suspects the behavior may help them avoid predators.

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"It may be a way to communicate with each other without alerting the things that want to eat them," she says.

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Title Annotation:BIOLOGY: ADAPTATIONS; tarsiers
Author:Crane, Cody
Publication:Science World
Article Type:Brief article
Geographic Code:1USA
Date:Aug 21, 2012
Words:104
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