I tried three bags over months of having my females, and now ducklings penned, and they all got horribly ill and vit min especially niacin deficiencies, one duckling disabled maybe perm, one duckling disabled to point will probly need to be put down. switched to dumar duck/chick starter (20%), and trouble stopped. trying to supplement to fix prob and trying to get hold of purina as well as supposed experts to stop endorsing and encouraging people to use (obviously just taking money to advertise and not researching or using selves, as one or two bags could be mill mixing error but three bought from different shipments???). fed nothing but cheap "co-op" brand "chick start/grow" and had no trouble from ducks through no bug or green season here with mother father and young scovy (and they were rescues, kept in barn stall from hatchlings, given whole corn only till i bought at point of lay at about year old). used dumar game/chick only starter (24%) for leghornd n game hens before, and chick/duck start/grow for scovy of all ages (20%) and no trouble but fast growth and bad sloppy poops some. since switched back to dumar that maybe need extra richness i didn't think needed before for scovy and games, but maybe need for KCs n leghorns due to growing for production layers nature. my ducklings have started eating feed a lot more but pooping less, and growing steadier stopped trying to eat each other and gulping down wood pine chips and shavings.
Hens go broody when you don’t want them to… and won’t go broody when you do. 
