For migrating sparrows, kids have a compass, but adults have the map

Even bird brains can get to know an entire continent -- but it takes them a year of migration to do so, suggests a Princeton research team.

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<p><a href="http://www.physorg.com/news113507191.html">For migrating sparrows, kids have a compass, but adults have the map</a></p> <p>Even bird brains can get to know an entire continent -- but it takes them a year of migration to do so, suggests a Princeton research team.</p>