Hi,
I was interested in hearing from anyone that has kept yellow-foots and red-foots together. Obviously I would never keep a yellow-foot and a leopard tort together. However, I think a redfoot and yellowfoot would do well together. They are from the same region and have similar diets. I don't think it would be any different than keeping two redfoots together. In the wild, no two redfoots would ever live together. They might cross paths or breed, but that would be it.
Bilbo