PhysOrg Posted March 20, 2017 Share Posted March 20, 2017 For migratory birds, breeding grounds are where the action is. But a new study by University of Guelph biologists is among the first to suggest that the number of songbirds breeding during spring and summer depends mostly on what happens at their wintering grounds. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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