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Spring arrives

Suddenly the mesquites are putting out these green shoots. They were all quite bare from the frost. Saw a Cooper’s Hawk in the eucalyptus, and a probable Redtailed-Hawk in a tree in the wash. It must have been in transitional plumage; scalloped back, white through with red strip up the middle. In flight, notched tail, white patches on back of wing.

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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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