I would love to get a pair of Brown chinese geese or african geese I don't know the diffrence between the two. I'm looking for a bird to kind of be like a pet. How big do the geese get that I mentioned above? I have chickens and ducks together would geese get along with them? I let my birds free range when I'm home and when I'm not they stay in a 40 by 10 foot run and the house part is 8 feet by 10. And can geese eat chicken feed? I know nothing about geese so advice would be appreciated. Thanks.