This article said that studies at UW in Seattle showed that American Crows could recognize the people's faces. During the studies, the researchers wore assorted masks and recorded how the crows behaved. Later when the crows spotted a person wearing the mask worn during the banding process, they formed small mobs and scolded that person severely.
Amazingly even seven years afterwards, the crows clung to the memory and those born afterwards without actually experiencing the banding recognize the notorious face (the old ones must have taught young ones). In addition, they can also recognize the faces associated with a good behaviour such as offering food.
Wow, I have to behave good!!! You, too.
" That's why I remember you and your backyard."
"It's nice to be at a safe ground."
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