I let the chickens take care of their own babies within the flock from day 1. They seem to do a good job integrating them and I've not had any problems. Occasionally one gets killed but this is rare and I think it has more to do with there being something wrong with the chick itself. One...
I have a yellow Labrador retriever and she got along with the chickens from the start. She would bark and run up to them and scare them but this was her greeting. She knows the chickens and duck are part of the 'good' animals. One day she went out there with a steak leftover bone though and...