PhysOrg Posted April 22, 2014 Share Posted April 22, 2014 Analyzing thousands of breeding bird surveys sent in by citizen scientists across the western United States and Canada over 35 years, wildlife researchers report that most of the 40 songbird species they studied shifted either northward or toward higher elevation in response to climate change, but did not necessarily do both. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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