i have just now realized.. when they swim.. they automatically poop.. its kinda wierd.. but i have never had a duck B4 so i would'nt know.... oh and it isn't cornstarch that they eat it is cornMEAL.. hehe oops.....but they went for a swim then ate then CRASHED i mean they are out of it.. sleeping is prolly very important for them so i wont disturb untill morning when i feed them