There are two six week old, light Brahma pullets in my brooder. Sugar is fully feathered and looks, well, normal. Sydney is the scraggly one with only some of her feathers. Not sure what happened. Sydney eats a lot, drinks a lot and is quite active. They are currently enjoying the Scratch & Peck grower feed. They get daily treats of either scrambled egg, cottage cheese, chopped tomato's or carrot shavings. Their water has a tablespoon of apple cider vinegar. Is there anything else related to diet that I can provide to help Sydney along? Are some Brahma's just more prone to slow development than others? Any advise would be appreciated. Thanks!