prominence of white wing edgings, and richness of buff wash on the flanks. Although the mountain chickadee is the black-capped’s closest relative, the Carolina chickadee likely will cause the ...

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The Carolina chickadee’s geographic range overlaps the black-capped. Listen and look for differences. Its chick-a-dee-dee ...

Amid cuts to federal funding, US universities tighten budgets, forcing PhD students and early-career researchers to navigate an uncertain future. After widespread government layoffs, scientists worry ...