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Every year the contest attracts entries capturing rare and unusual moments in the avian world. Here are this year's highlights.
In 1850, Cooper anonymously published a book whose call for conservation won praise from Charles Darwin. It was largely forgotten—until recently.
New studies suggest that northern populations of White-breasted Nuthatches might also have irruptive years—and 2020 is one of them.
Left unburned, woody vegetation is crowding out habitat, but proactive landowners are learning to use fire to restore America’s grasslands.