Springtime Now Arrives Earlier for Birds

SCIENTIFIC AMERICAN

A trove of scientific notes from the early 1900s suggests a warming climate is driving birds to migrate earlier to New York’s Mohonk Preserve.

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Records of bird migration dates starting in the 1930s show that migratory species like the redwing blackbird are arriving earlier and earlier in the spring. (Credit: Andrea Westmoreland via Wikimedia Commons)
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