Hi new to raising chickens. I have 7 15 week old hens 2 light brahmas, 1EE , 1cream leg bar, 1 CQ, 1 Silkie, and lastly 1 BR. They r in a run that is 24Lx 10W x 4H (i know its not high) uncovered run all day. They have recently began flying over the top. Is it ok to trim there feathers on one wing to help prevent them from flying over? I have done this with parakeets before.