1. My current Harris hawk pecked at pictures of birds in books while I was training him. Interestingly, he seem to recognize even etchings and line drawings of birds as "potentially edible."

  2. Mabel, too, recognised tiny line drawings of partridges and ignored non-gamebirds. I told Tim Birkhead this and he was all, "wow. Let's do an experiment!"

  3. Yeah, two of my passage redtails pecked at photos in the Audubon guide — especially the barn owl: one of the RTs went right for the head. Raptors do have some pretty amazing pattern-matching skills.

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