It's up to you but your plan idea would be my inclination, to give it a shot, if I were in your place. Although I agree with most of what
@Shadrach says, I'm with
@RoyalChick on this one philosophically. The situation with Phyllis, actually with all chicken-keeping, is not a natural one in the first place, in so many ways. You are the chicken mama- daddy, and controller of the FB Acres universe. Because of the Hut and the two new littles, Phyllis doesn't necessarily have to lie any more in the bed that was made for her before. You can offer her a different bed, show her by moving her to it that this place is Approved Housing too, and it comes with two young residents who respect her. I don't see this action as terribly damaging if it doesn't have the result you are hoping for after a week. In the end, they will decide, and maybe it will be better for Phyllis.