I use bird feeders as entertainment for my INdoor cats. They sit at the slider door, and chirp, coo, and meow at the birdies, and squirrels that come to feed. They really yelp at the big blue jays. Last week they were running from window to window and yelping, and chirping and kinda going crazy. I went out back to look, and there is a HUGE redtail hawk sitting on the tree limb that holds up the clothes line. he was MASSIVE! My lil cat was sure she could take him. He stayed about a half hour, just resting. When he was done, he flapped those HUGE wings, and off he went. Havent seen him since.

I try to not feed them much in the late spring, summer, and early fall. I want them to go dig up worms, bugs, and do what comes naturally, but my kitties love them so much. Its like TV to them.