Forum > Birds In The News > Departure Of Migratory Birds From Stopover Sites Is Hormone-controlled

Webmaster Posted 07-Feb-2017 09:27
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From Science Daily, New York Times and BBC on 07-Feb-2017 09:27

It had been unclear which physiological signals triggered the birds decision to continue their flight. A team has now identified, for the first time, the hormone ghrelin as a signal for the birds brains. Ghrelin, an appetite-regulating hormone in humans, was measured at high levels in satiated garden warblers. Birds injected with additional ghrelin exhibited decreased appetite and increased migratory restlessness.

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