I have a bird, but he can't fly. No, I don't clip his wings - but he's missing quite a few feathers from the poor conditions he lived in when he was with his previous owners. The feathers on one wing grew back long and beautiful since he's been with me, but the feathers on his other wing grow in short and stubby. He tries to fly, but always crashes back to the ground, poor guy. Anyway, if he could fly, would I let him fly around the house? Sure, but only under supervision, and only when there was no chance of anybody opening the door (there are only two of us in the house, so it would be easier to control). I'd also make sure the cats went into a different closed off area of the house, for obvious reasons. It's good for birds to fly at least a little while every day for exercise.