When I got my pheasant he had been housed with three chooks as long as they've been alive (2 years, he's 6). He was given to me WITH his chicken house-mates. I was given them by a very very very reputable chicken breeder/shower (constant blue ribbon winner and a bloke that can talk your ear off about showing high quality birds for days if you let him). If this pheasant has been with these particular chickens (and their parent lineage!) it's whole life, is there still a problem? I am 99.99% certain this man would've given his animals their preventative medicines, he was really hardcore about it all. BUT the chicken/pheasant run of his was very large and I wonder if that attributed to the health of my pheasant? It was also housed with a Mandarin duck (o.m.g <3). The pheasant seems fond of his little friends, but I don't want him to be TOO fond of them and get sick... so I should still separate them?