Im sorry to intervene but feathers are mostly beta carotein which can be found in kale and spinach. Please don't feed high protein foods to waterfowl. it can cause all sorts of problems in feather and bone growth. Angel wing being the most heard of. If she's free range she'll find the protein she needs in bugs and worms. You could offer her mealworms or maggots but not high protein foods. She also looks like she's got wet feather. Not been able to bath or preen herself much. A good bath, some lovely fresh greens and bugs and she'll be as fit as before in no time. She'll probably be going through a moult too which will make her look a bit straggly. Im so pleased she's found her way home xxxx