No I picked them up right down the street from me. No, he can see just fine. Never saw anything like it. I saw him do it when I picked them up but, I thought maybe he was playing or the sun was in his eyes. But he is still doing it.
I will try to take a video of it.
It could be neurological, or a vitamin deficiency. Try vitamins, and look up flipping chick or spinning chick on the threads.
(although, good luck with the search, I was looking for something today and even after trying 3 different phrases it pulled up the same pages.. )