Layer or all flock feed is perfectly balanced and all they need. Scratch grains are not balanced, have little protein, and it is not true that more carbs or scratch will keep chickens warm in winter. A good balanced diet is what they need. An occasional treat of cooked eggs might be good. When a...
Does she still lay eggs? Is her tail position up or down? Is her crop emptying overnight, then filling up during the day? Has she lost weight or does she have an enlarged lower belly under her vent? Can you post a picture of her poops, and of her? At her age a reproductive disorder, crop...