Hi,I have a question that I can find an answer to. I have 3 KC ducks about 2 years old (2M, 1F). A couple of days ago one of the males started to quack non-stop...all day and all night. He has also lost his wing feathers and seems to have changed colours. The feathers may have happened before, usually they stay at the end of the yard and I don't notice them much. Other than this, he appears normal; eats swims, plays with the other 2 ducks. Any ideas? I had a female duck do this in the past after her eggs hatched and then die unexdplainedly a few days later, like she died of stress or something. Thanks for any insight. If he doesn't shut up soon I'm afraid I'm going to have to get rid of him.