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RE: Avian color vision

In every copy of the July _Scientific American_ at my local store, the avian
color vision article has one flawed page that is faded and blurred.  Are all
copies of this article defective, or just the "Special California Editions"
of the magazine?

Dino Guy Ralph
Docent at the California Academy of Sciences
Dinosaur and Fossil Education
Member of the Society of Vertebrate Paleontology

Perhaps if I was a bird the text would look sharp to me.