I think it is a crapshoot on the breed wether or not there will be problems from their size. I have a jumbo drake and a regular-sized crested hen, along with a standard Pekin mix hen. My jumbo is in excellent shape, but I only feed him once a day with a large area to exercise. Maybe it's the...
I bought a Jumbo Pekin (Donald) from TSC, thinking it was a regular Pekin. Turns out to be a drake, and he is now about 10 weeks old. He was bought as a trio with an assorted straight run. I have a Bali/Runner mixed drake (Ducky) and a White Crested duck (Nemo). Obviously, I need to get more...