I purchased 12 Buff Orpington 2 week old chicks. I have had them for a week now. I am throughly enjoying them. One of the 12 is beginning to look different than the others. Her/his wing feathers are turning white. Upon seeing this, it made me look even more closely at the bunch. The one with the white wing feathers also has blue-ish looking legs and feet! What might I have if he/she isn't a Buff Orpington? (I'm obviously new to this hobby!)