Click here for Cornell University’s answer. Big number but much smaller than our trade deficit with China which is what our President cares about so much. Meanwhile, sane people can observe the annual avian cycle all around us.
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Posted by: atowhee | October 5, 2018
HOW MANY BIRDS MIGRATE ACROSS NORTH AMERICA?
Posted in birding, birds, migratory birds, natural history, research | Tags: Cornell Ornithology Lab, fall migration
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