From The Egg, Baby Crocodiles Call To Each Other And To Mom
Tuesday, June 24, 2008 - 21:28
in Psychology & Sociology
The pre-hatching calls of baby Nile crocodiles actually mean something to their siblings and to their mothers. The calls -- which are perfectly audible to humans and sound like "umph! umph! umph!" -- tell the others in the nest that it's time to hatch, according to research in Current Biology. Those cries also tell the mother crocodile to start digging up the nest.
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