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Blue Paloverde

Cercidium floridum. Note the thorns at the side.

Loud joyful Pyrrhuloxia on a telephone wire, furtive Abert’s Towhees hopping in the bushes, not yet in song. Best of all, a Great Blue Heron gliding across the wash, yellow beak piercing the air and crooked neck forming a pouch-like keel. Still cool and crisp, but spring is creeping in.

Returning for an evening walk, I saw a Loggerhead Shrike, a first sighting in the wash. He was clear in the evening sun, with black eye mask and black edge to the wings. Also a hawk or owl chasing a pigeon.

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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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