My dad had a friend who worked at a remote logging area and tossed his bread crust to a raven that was perched by the road. Next day, the raven swooped past his truck as he drove past. Eventually he stopped and dug something out of his lunchbox and gave it to him.

Then every day for months, he would just hold a snack in his fingers and the raven would swoop down and grab it as he drove past. Pretty amazing to think about. That level of foresight, adherence to a routine, not giving up (days off, etc).

I knew somebody who had logged in Alaska and they swore that this one town had a huge crow who would hang out by the town's welcome sign and...welcome the visitors. Apparently crows who spend enough time around people will sometimes mimic human speech and this particular crow had been taught to welcome people in.