We opened our coop yesterday to one of our two female ducks having died overnight. We thought she may have been egg bound as she had laid a soft egg 2 afternoons before and there’s one egg every morning so hard to tell who lays it. Recently the females have been loosing feathers on their back/ under their wings & looking scruffy. We thought maybe they were moulting. See picture for how she was looking the days before. When dead she had white deposits by her opening (see photo) not sure if this was signs of being egg bound or live or what. Today the other female seems to be limping, holding one foot up, looking scruffy. We are very worried about her as the other female passed so quickly so feel like we need to intervene fast. She has been laying eggs so we feel she isn’t egg bound. Maybe lice? Wet feather? Bumblefoot? Nitrient deficiency? -They are kept in good conditions with good food and foraging, I sprinkle oyster shells around their pen periodically so they can forage for them if they want (maybe they need more?) - they were born last July so are young and been raised very well. - they have been producing eggs for a few months without issue except for some calcium bumps sometimes and the one soft egg. - we had 4 males and 2 females overwinter while they were young but the males got aggressive and over sexual so 3 of the males were butchered last weekend, this may have stressed the remaining 3 out but they seemed calm and happy. Maybe too many males stressed the females out before this though although I’d been seperating them the weeks prior. - we are new to this, it’s our first time having ducks and we live far from a vet so that’s not an option unless very necessary.