Hello I have a flock of 19 chickens and two turkeys. (Four of my chickens are roosters.) They all get along just great! One thing you have to check into, is whether or not blackhead disease is a problem in your area. Blackhead disease is something that chickens carry and can give to turkeys, which can kill them.
In my area, there are several farmers raising turkeys and chickens together, and the local breeder I bought my turkeys from said that he's been raising them together for years.
So this is my first year with the chickens and my two turkeys, and I love it! They're not loud, so far, they're very peaceful creatures, and they're kind of slower and more docile than chickens......I just love the turkeys, in fact, they may become pets instead of Thanksgiving dinner. They're just so darned cute and interesting.