Most migratory birds rely on a greening world, study finds

A new study from the Cornell Lab of Ornithology confirms that most birds—but not all—synchronize their migratory movements with seasonal changes in vegetation greenness. This is the first study of its kind to cover the ...

Commentary: It's not too late to save the birds of North America

Over three weeks starting Saturday, thousands of birders in the Western Hemisphere will take part in the annual, 119-year-old Audubon Christmas Bird Count. These tallies are conducted in prearranged circles within a seven-mile ...

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