Accumulated wealth encourages family stability, not only for humans

Among Western bluebirds and other cooperatively breeding birds, when grown children hang around the nest instead of dispersing at maturity, family structures become more close-knit. But what keeps the kids hanging around? A new study shows, as with humans, it's the accumulated wealth. Once the money begins to run out, the kids split.

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<p><a href="http://www.physorg.com/news7538.html">Accumulated wealth encourages family stability, not only for humans</a></p> <p> Among Western bluebirds and other cooperatively breeding birds, when grown children hang around the nest instead of dispersing at maturity, family structures become more close-knit. But what keeps the kids hanging around? A new study shows, as with humans, it's the accumulated wealth. Once the money begins to run out, the kids split.</p>