Casper is almost 6 months old. Up until last month he was developing like his brothers who are very grand looking, and both of them have started to crow. Casper is smaller than they are but bigger than his sisters. He acts more like the hens but doesn't hang out with anyone. I have 2 other small roosters who were completely raised by their mother. They're a week older than my other young birds but look younger and smaller. If not for their changing coloring, I'd never believe they were roosters. Is this common for roosters at the bottom of the pecking order? My main question, is Casper really a hen? Father is a white favorelle and mother is an ameraucana. Casper has deformed feet with 4.5 toes per foot. The 5th toes are more fused to the 4th.