I'm thinking of getting a pair of Sebastopol goslings. Ive raised guineas, ducks and chickens, how do they compare in friendliness and ease of raising? How old are they before they fully feather and can be outside? Any tips or insight would be appreciated! Also how do they get along with chickens and ducks? I currently have frizzle Cochin, silkies, quail antwerp, and crosses of the three as well as a Pekin and khaki Campbell's.