Butcher Birds was the nickname given to the Fw 190.
Each Group, Squadron and so forth had its own name.
I. Gruppe: Wilde Sau
II. Gruppe/5. Squadron: Rabatz Staffel
III. Gruppe: Rabuakan Gruppe
I am sure there were much more, but I do not recall them.
Interesting side note, I have found Erich Hartmanns (he was in JG 52) gravesite and I will be going to see it next time I go and visit my mother, probably next weekend. It is about 20 minutes from her house.
Also not a member of JG-52 but Hans-Ulrich Rudel is buried about 20 minutes from my house and I am going to make a trip out to his grave site as well.
I will post pictures.