Picky Blue Jays

We have adopted, or they have adopted us, a large family of Blue Jays. There are about 10 of them and when we put peanuts on the wall we get to see most of them, and man can they get loud. This one particular Jay was somewhat of a picky eater. He would pick up a peanut and then drop it. He would walk around picking them up and letting them fall. He would listen to them when hey hit the ground to see if there was a nut inside. He was the only one doing this. We love feeding the birds, Chipmunks, Squirrels, but not the Possum.