When I first came out this morning two ducks were by the porch, one laying and one standing. Couple hours later they are still in the same spot. The one laying down did not move or make noise when the dog and I approached. I've picked her up which she made no effort to get away. Examined her best I could, no visible wounds, she can move wings, feet look well, eyes and nose are clear, able to walk. She won't stand for long and she won't eat, I've made her some water with Brewers yeast and honey. She won't drink on her own but I gently pushed her beak to the water and she takes sips. Should I add apple cider vinegar? The second duck does move around so maybe she's just keeping her sister company? I've placed them both in a dog crate covered with the water and food. I have no clue what else to do or what could even be wrong?