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Natural history

Harris’s Hawk taking off

Some White-thorn Acacia’s are still bloom in the shadier parts of the wash, but most of the acacias, mesquites, and paloverdes are past it, putting out their pods. The brittlebushes are all looking dead again, preparing for survival of the summer. I heard a Lucy’s Warbler again … don’t think I’ve actually seen one all spring, but I’ve been traveling a lot. The Harris’s Hawk was making his usual complaint, a sharp whining cry, before I got too close and he took off for the next telephone pole.

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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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