No, the weather isn't hot. I'm on Bainbridge Island WA just west of Seattle. My husband said he saw discharge from a nostril but I examined him closely (that means I put my reading glasses on and looked him over really good) and he looked dry in all the right places. He eats little bits about every 3-4 hours and he is drinking his medicated water as well. He is thin. I can feel his back bone and hip bones all too well. His crop is never really full the way I see chickens crops. I don't know if Ducks are different. But he is pooping normally.
As for my adult drake--he is not even a year old yet and though he is obnoxious in his own right, he takes some of his leads from the hens who are at least a year older from him and the one he is so amorous with has had a nest before. The other one was a rescue from a previous flock. She is healthy and quite beautiful. She was a newcomer there and the other hens and even the drake didn't allow her to make a nest and they even tried to starve her out. She had ugly flesh wounds on her shoulders when we got her but she healed up nicely and gained weight soon after we got her. She is mistrustful of people and I think other ducks as well. She has mated w/ Jiminy, the drake, and even had a nest and was naturally territorial chasing Blossom away. But......we were trying to candle them and see if they were fertile. We didn't take them away at all. We did it right there, but she abandoned the nest. She hasn't laid an egg since and since Blossom had a duckling, Jiminy has actually been hostile to her--pulling feathers out and making her bleed. She just hides out in the chicken coop all day. I haven't added a 3rd hen yet because I wanted to make sure she (Xochitl--So-chee) was acclimated and part of the flock.
Jiminy is obnoxious
and he's aggressive but not completely unmanageable. But I am going to find another home for him and I have a drake waiting in the wings that is sweet and mellow. I'm hoping that will change things.
I thought this whole raising chickens and ducks thing was relaxing and uncomplicated. Wow.
But I still love it. I appreciate your all your help. So glad you addressed my concerns. I've been having a hard time finding clear answers about what to do. Thanks again.