Hi there my ducks started one by one today doing this weird/shake fluff up thing? It started with 2 and then Echo the brown one you can see starts doing it...I have never seen them do this before, just wondering if it was normal, just being ducks... or not? They are about 6 months old, it isn't very cold here at all, the snow we had already melted, they have a dry warm duck house they sleep in, have a covered raised up area they can get to whenever they want as well. I cleaned their pen all out today and didn't notice mites or bugs at all. They all acted fine followed me out around the yard, ate, swam in their pool. Do your ducks do this ever? Thanks, happy new year!