Hi everyone. First-timer here. I'm new to backyard chickens. I've had 4 now since beginning of May....so close to 2 months now. They are doing great. Happily free-ranging in the yard. My question is this,....How do you stop, or deter a chicken from flying outside of the yard. My fences are 6' high and I have cut one wing from each chicken. So far, everything has gone very well, but it's been a couple of days in a row now and one of my chickens, despite having her wing clipped has managed to make it to the neighbours yard....twice. I feel bad keeping them in their enclosure even though they have plenty of space in there. And I definitely feel terrible about penalizing the other 3 because 1 is misbehaving. So any advice? Can I attach a tiny bell to her leg so I can hear her if she does manage to escape again? Or is that cruel. Any help on this matter would be greatly appreciated. Thanks guys