I recall some recent comments about how mocking birds are particularly sneaky when it comes to stealing fruit, and thought I'd share an experience. A few days ago I decided to cover a persimmon with bird netting because the birds were even eating the unripe, astringent fruit. I made a framework and covered it with netting, stopping about a foot from the ground with the intention of finishing off the bottom section with plastic sheeting (it keeps my scaley friends from getting their heads stuck in the netting).
A day or so later when I came back with the plastic, there were several mocking birds and a woodpecker inside the cage, having a feast. When the mockers saw me coming they all immediately swooped down and flew out through the narrow gap, while the dim-witted woodpecker flew squawking into the mesh and resisted all efforts to show him how to get out. After I had make a couple trips to the garage for tools, he still hadn't figured out how to escape, and I finally had to hose him down till he was too wet to fly, and then shoo him out under the netting. So, at least if you're comparing mocking birds to woodpeckers, there's no contest as to which species ended up with the brains!
As a post-script, it was pretty comical to watch the various birds' reactions after they realized the free lunch was over. It took about a day before they finally gave up and quit hanging around the cage; evidently they were hoping I'd change my mind and let them back in again. Fat chance!