For 3 years, the team has been studying local migration patterns. Over the last 50 years, North America's bird populations ...
The research was conducted across North America with the help of some 1,500 citizen scientists who observed bird behaviors during totality.
Great egrets and little blue herons. Blue-winged warblers and yellow-bellied sapsuckers. Snowy owls and tropical kingbirds. Across North America, three-fourths of bird species are in decline, ...
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