Welcome to the Naked Neck fans, lol... I brought 3 home from the feed store because they had been there for over 4 weeks and nobody wanted them. I felt so sorry for those ugly little things, lol. I have since just fallen in love with my girls. They are super sweet and very calm and seem to get along with everyone. Anyway, I found this and I think it might have at least some of the info you are looking for. http://www.mypetchicken.com/Naked_Neck__Turken_-B107.aspx
I was told they are excellent layers but will get broody. Mine are about 6 weeks old now and are getting feathers around their bottom side that look like a skirt, it is just too cute.