I have two almost 4 week old ducklings. I've been searching the Internet and all its done is confused me. Does anyone with experience have any tips for what percentage of protein should be fed at which stages? I have chick starter/grower crumbles available at either 18 or 19% but they don't seem to like the powder in it so a lot is left behind. Or I have waterfowl feed available at 14%. I have read conflicting advice. Also I believe one is a drake and the other a female so I'm also confused as to what to feed once she starts laying.