This is what Harley did last night — clearly I was too slow tending to his snack needs, so he hung upside down on his Art Project for awhile to emphasize how much he
needed food:

And today, he totally leeeeeaned me around the kitchen so he could explore. Since he's already pretty much demolished the cereal box on the top of the refrigerator, this morning he ended up in the cabinet. Yes, you heard that right: in the cabinet.
The 3 3/4 inches on top of the can of tomatoes is
plenty big enough for a bird to climb into, sample the oatmeal box, and chew up quite a bit of the pasta box and four elbow noodles.
Oh yeah, I think he's feeling better.
Despite the 19 degree weather, I took Harley to the vet today, who confirmed over all the barking and growling that he's doing well. We're supposed to continue to keep him quiet for another week — so I'll have to be quicker than I was last night in providing easy snacks. The best news is the vet said she'd try to take an x-ray without using anesthesia, if we decide he still needs one later.