I had made a post about my Cayuga being sick a few weeks ago. https://www.backyardchickens.com/t/853213/duck-convulsions-not-sure-whats-going-on-sick-duck I noticed about a week and a half ago that her chest seems to be protruding. I've seen some ducks with the chest similar but this seems kinda abnormal to large. I'm not sure if this one is normal or not the other one doesn't have it. Also an update to my previous post. My duck still is off, her balance is still not good. She's very happy eating and drinking just fine. Her waddle is way off. I had her out and she was stretching and flapping her wings and falling like she can't keep her balance. I've been switching between charcoal, antibiotics and vitamins but nothing seems to get her back to 100%. This all started back from the beginning of the month like 2/2. Here are some pics of her chest.