This little guy has been visiting me at work almost every day for the last few weeks. He lives across the street and he comes running as soon as I pull up in the morning.
Ya, I adopted an outside kitty, tried to make her an inside kitty. She would paw at the windows for 12 hrs a day, sleep, then go back to pawing at the windows. Wouldn't eat or groom herself.
I did however train her out of going after birds outside. I'd go out with her, and spray her with a water bottle whenever she got interested in a bird. It worked! She only ever brought rodent corpses home!