I've been filling the #Kingsyard box with black walnuts every day, and many squirrels came and took them out. One of them seemed to have issues figuring it out, and of course it was a tiny haggard little guy and I kept looking for his progress and made it my mission to help him learn. I would put a nut right under the lid to lift it, and pile them up so much the lid would lift, so he knows that it can. And yesterday, he finally figured it out. It was quite the process and but he did it! I am so proud of him, and I hope he will be nice and fat and shiny soon.
https://youtu.be/zxjY3TqdsO8