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Anna’s hummingbirds

The one with his wings open flew in, stayed for half a minute, then flew out. The other one was not particularly aggressive, perhaps because it was too cold, or out of breeding season.

Also saw a butterfly I couldn’t identify, very close to an Empress Leilia but lacking some of the identifying marks. Perhaps through loss of some parts of the 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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