One time, long ago, I got a huge sack of hazel nuts, something like 40 or 50 pounds. Every day I would put some nuts into the bark of a large cedar tree next door. I'm pretty sure I had the squirrels convinced that cedars grew hazel nuts. Ran out of hazel nuts, so started feeding peanuts on the ground. Bluejays would take the peanuts and hide them, and the squirrels would sniff them out and either eat them or re-hide them someplace else. Quit feeding the critters when my wife got so sick, and just never have got back into it.