ScienceDaily Posted September 20, 2017 Share Posted September 20, 2017 The onset of the last ice age may have forced some bird species to abandon their northerly migrations for thousands of years, says new research led by an ornithologist. The study challenges a long-held presumption that birds merely shortened their migratory flights when glaciers advanced south to cover much of North America and northern Europe about 21,000 years ago. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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