I have 4 pekins and they are going on 2 mths now they are fully feathered, but one of them has really loud mouth. Is this the female? The other 3 are soft, but not loud like this one. I dont see any curled feathers on any of them so just dont know. My other crew of 3 I can definatley tell the female from her voice, she is much louder than the other two boys. Please help.