At the end of January, I heard a northern cardinal sing. Birdy, birdy, birdy. What cheer, cheer, cheer. A crimson-red male sat at the top of the tree and sent out his advertisement to a nearby female.
Kevin Omland is a professor of Biological Sciences at the University of Maryland, Baltimore County. Evangeline Rose is a postdoctoral research associate at the University of Maryland. Karan Odom is a ...
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