They may never be able to be with them, depends on the temperament of your chickens, when introducing new flock members no matter what breed, it should be done slowly, put up temp fencing maybe try the plastic poultry fencing That's what I use, keep the young ones in there side by side with adult chickens and let them get to know each other that way for a couple weeks, then try letting them be together. It still may not work but hopefully it will, and by 4 months ducklings look like adults physically. ducks can start laying by 5 months and drakes can begin mating 5-6 months. so keeping a close eye on drakes is very important too since drakes can kill chicken hens if they mate with them. starting with 1st egg start feeding layer just like chickens.When does a ducking mature? When will my ducklings be able to join my adult chickens in the coop and eat layer feed?
Niacin should be provided for the first 10 weeks or so if they are being fed chick starter. If they are eating a feed made for growing ducks, they shouldn't need the added niacin.I'm feeding it duck pellets right now, so when it starts to lay I will change to layer/grower but will I have to feed them niacin, brewers yeast and all that stuff also?
Domestic ducks do the strangest things. Romy goes intensely broody - for three or four days. Some ducks hatch the eggs, then attack the ducklings. You just don't know how it will go. Do you have access to an incubator?why would my duck sit for 26 days on fertile eggs and then not sit on the eggs?