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Natural history

Cooper’s Hawk with tail spread out

Cool is returning to the morning walks. This hawk was particularly close to me and didn’t seem to mind me walking around. Earlier I had seen him swoop down to the ground, but didn’t see what it was he wanted to catch.

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About Bill McCallum

I was born in Australia and came to the United States to pursue a Ph. D. in mathematics at Harvard University, met my wife, and never went back. I am a professor at the University of Arizona, working in number theory and mathematics education.

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