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Every year without fail, several emails with accompanying photos come to my attention asking about creatures that look like weird black-headed cardinals. Some queries wonder if the photos depict a new ...

A rare yellow northern cardinal spotted in Alabama in 2018 became an internet sensation and opened millions of people’s eyes to a spectacular power of genetic mutation. Now, Geoffrey Hill, an ...

Pine siskins have come south into the metro area, driven by scarcity of food in their usual northern range. Friends at varying distances east, west and north of us have siskins at their feeders. But ...