My 3 male ducks, rooster, and laying hens all free range in our large fenced backyard all day every day. They are constantly eating out there. Currently the main feeder holds flock raiser which has 20% protein and I have oyster shells and a dish of layer crumble where only the chickens can get it and it's near their nesting boxes. From research I've found that drakes need 14% protein, roosters need 14-16% and laying hens need about 16-20%. Should I convert to a 16% crumble or maybe get a mixture of different feeds? It's important my jumbo pekin drakes stay healthy. Hens are 6 months Drakes are 7-7.5 months Rooster is little over a year and needs to regrow feather after a long time spent being beaten up in a bachelor flock. Thanks!