One of my Runner ducks, Edda, is showing breathing difficulties. She's the smallest one of my flock and from the beginning she's been on the small and weak side. From the beginning, she has 'eaten like a bird.' While her sisters wolf down their treats and food, she'll take a nibble, stare into space for 2 minutes, take another small nibble, etc. Treats like lettuce, kale, peas and tomatoes are gone before she knows it. She's not a huge forager, so I don't think her lack of appetite is due to her gobbling down the critters in the yard. She tends to just stand around a lot. She'll follow her sisters to the food/treats/etc, but she doesn't show any gusto in partaking. I'd separate her so she can have the food, treat bowl to herself, but when I do so, she just starts looking for her duck friends and doesn't eat. I'd also hand feed her, but she's very skittish and rarely accepts the odd worm or slug I try to give her. I'm wondering what I can do for her, if anything, if she won't eat. Crop feeding her doesn't 'seem realistic as a long term strategy. If I take her to the vet, and get her treatment, how useful will it be for her if she doesn't seem to have any appetite when I leave the vet's office? She still gets around, and preens with her flock friends when they do. She's not showing signs of overt sickness (laying around, separating herself from the flock, etc), but with the breathing difficulties (breathing with her whole body), I know that day will probably come. Does anyone out there have any advice or perspective. I want to take care of her and offer her a good life, but I'm perplexed about the persistent and consistent lack of appetite.