PhysOrg Posted July 12, 2017 Share Posted July 12, 2017 Migrating birds complete long non-stop flights of many hours for songbirds and days for some shorebirds to reach breeding or wintering grounds. During such flights a bird's metabolic rate is very high, fueled by stored fat, but also by burning the protein in muscles and organs in a process that is not well understood, says eco-physiologist Alexander Gerson at the University of Massachusetts Amherst. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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