Just before Christmas, two backyard birders in Michigan were in for the ultimate surprise–a yellow Northern Cardinal. Arlene ...
Scientists learned that missing one of the two enzymes causes this mutation after studying feathers taken from the first yellow northern cardinal documented in the wild. That bird was “collected ...
The bright yellow cardinal is a result of a genetic mutation of the Northern Cardinals species, typically seen with iconic red feathers ... According to the Bird Note Organization, some Northern ...
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