I have 8, almost 4 week old barred rock chicks. I'm thinking 2 are pullets based on their lighter coloring. Then there is my 'black sheep'. Not feathering out like the others in that barred pattern and just looks different. Even seems to be lacking combs or has some sort of disformation. Can you help me with the genders of my chicks please and tell me what's with the 'black sheep'? I included a bunch of pictures to show color differences, if you need other types of pictures let me know. I'm a newbie to this.