Mama bird tells babies to shut up, danger is near

By Sarah Zielinski, 17:59 PM October 18, 2013

Sending up the alarm when a predator approaches seems like a good idea on the surface. But it isn’t always, because such warnings might help the predator pinpoint the location of its next meal. So animals often take their audience into account when deciding whether or not to warn it of impending danger. And a new study in Biology Letters finds that the vulnerability of that audience matters, at least when we’re talking about baby birds and their parents.

Tonya Haff and Robert Magrath of Austra...

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