About a year and a half ago, I got 3 ducks and a gander. I did some reading on line at the time, and the general consensus seemed to be that they needed to be on a 18% protein food. I fed them a game bird ration that was 18%. My hen (rouan) started laying about 6 eggs per week from about April to July. She stopped, molted, and has only laid 3 eggs since. In the process I had changed to a gamebird ration that was only 16% protein (I changed without reading the label). They do also get cracked corn in their feed and free range all day. I guess I have several questions. 1) Why would she stop laying? She won't even be two years old until April. 2) They do not have "angel wing". Is there any other way to determine if they are getting the right amount of protein (and anything else they need)? and 3) My chickens are on a 16% layer ration. It would be nice to be able to only buy one type of feed that would keep everyone happy, healthy and productive. I can get a Nutrena All Flock that is 18% or a game bird breed ration that is 30%. I thought the 30% sounded high. What's the general wisdom out there? (I only give oyster shell to my chickens. The duck egg shells were very hard without them.) Thank you in advance for any advice!