Its finally pretty warm here in MA, and I let my 4 pekin ducks out to free range while I did some work on their aviary. I noticed they were panting, much like a dog does. I have yet been able to get them to like swimming but I tried to put them in the pool with not luck (again).... Should I be worried about them panting or is this "normal?" What can I do to help them cool down if they won't swim or run if i try to spray with the hose?