I have several Partridge Cochins that I got as chicks from a Menonite Village a couple of years ago and have had a lot of hatches but all of a sudden I have this 6 month old that has a really different appearance. Any ideas? The one with the white on its wings is the one in question. The other pic is the roster and hen. It is a lot more leggy and it's legs are yellow. The white on the wings and it isn't squatty like the others. Any ideas?