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Natural history

Cholla flower

The Blue Paloverdes are covered with pods, flat, light-green with 3 or 4 pimply bumps where the seeds are, spaced well apart. Saw a White-crowned Sparrow, caught a brief glimpse of a Lucy’s Warbler, and heard the fly-catchers again. The lizards are out in force, including the big Desert Spiny Lizard that leaves near the hackberry bushes just north of Camino a Los Vientos. The chollas are blooming, from the wine-dark red in this photo to brighter crimson.


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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