Sibling rivalries lead to friendly finches

A new study has revealed that growing up with lots of siblings – and fighting over food – makes zebra finches more sociable in later life. In contrast, finches with fewer siblings become pickier about who they hang out ...

Study examines the downside of larger families

Large families often capture the public's attention, from "The Brady Bunch" to "19 Kids and Counting." But new research from economists at the University of Houston offers strong evidence that children in larger families ...

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