This is my first time raising ducks, I have 4 pekins an 3 mallards. Ok, now I may sound stupid for even thinking of an idea like this but is there any way you could attach a leg band to a duck, and having the leg band attached to a very long light weight rope or something like this and attaching the rope to a stake. This would allow the duck to be able to fly in circles. At least letting them stretch there wings, or would this cause problems when they ran out of tension in the rope. Sorry if this sounds ridiculous.