Recently found on sciencenow.sciencemag.org/archive
"When presented with pictures of people, animals, landscapes, and objects, pigeons were able to recall as many as 1200 of the pictures up to 5 years later, and baboons recalled more than 5000 of the pictures up to 3 years later. The findings boost the link between memory and cognition, say the researchers, and indicate that strong visual memory skills existed in the reptilian ancestor of birds and mammals."
Maybe, I can ask this guy how to remember where my keys are!
Image by: Stolz, Gary M.- USFWS