PhysOrg Posted May 28, 2020 Share Posted May 28, 2020 After a severe drought gripped the Prairie Pothole Region of the U.S. and Canada in the 1980s, populations of almost all dabbling duck species that breed there have recovered. But not northern pintails. Now, a new study by a team of researchers suggests why—they have been caught in an ecological trap.View the full article Quote Link to comment Share on other sites More sharing options...
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