MALE? I'm new to the chicken thing, and I recently purchased 4 sexlinks, I was told they were female, but I question two of them, the lighter ones are much bigger than the other two dark ones and they both grew combs that are pretty red, one of them is a little more aggressive than the others. Any thoughts on if they are all pullets or did we end up getting a cockerel in the bunch? Can pullets have combs that big? And any thoughts on what they could be mixed with? They are 4 weeks old, Thank you so much! Sorry if the pictures aren't that great PICTURE 1 PICTURE 2 MALE??? This one is the aggressive one PICTURE 3 PICTURE 4 Both Males? PICTURE 5 Male?? PICTURE 6 both males?