Wow, this got ugly.
I'll just answer the question. We put 3-5 birds in a 10 by 30 pen with 10 by 10 covered area. The pens are 8-10 feet tall. They thrive, have full crests, breed, show no feather loss or damage and the damnedest thing is that we can leave the pens open and they will come back every time.
