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A friend told me a story about a year ago about Crow behavior.
He has young children, and thus the back of their car is always a little disgusting with things like goldfish crackers littered all over the floor and in-between the cracks of their car seats.
They got in the habit of throwing the crumbs out onto the driveway when they got home. It didn’t take long for them to notice anytime they pulled in, the crows would be lined up on the power lines waiting for their free meal.
But it gets better. One of his kids loves watching the birds, so they’d go out there and do so a lot. Sometimes they’d throw them some crackers etc. for free entertainment.
They were outside one day and someone else walked by pretty close to them. They didn’t pose any (recognizable) threat, but apparently the crows thought they were in some sort of danger because several swooped down and attacked the person walking by.
They were totally fine after the crow mauling, but I did read that crows do view people as friend and foe, depending on what they might be trying to protect.