I've noticed in the last couple of weeks almost all of my ducks aren't looking as pretty. For example, my muskovy drake's pretty green feathers are looking brown and the necks of almost all of my cayugas are white instead of grey or dark green. Others are looking pretty dull or white too. I have also gone from 8-10 duck eggs a day to just 1. I thought the lack of eggs was due to the extreme heat we've had here lately. I hope it's just moulting and not a disease. Everyone has the same voracious appetite and energy level as always.