I have both. My chickens are my children (displaced mothering instinct, my own chicks have flown the coop). Most of them have names and some come in the house for a visit here and there. Yes, I have bought a chicken diaper but haven't tried it yet. I don't think I could eat them. I also buy cornish x chicks to raise for meat. They don't get names but do get the same good care as my "children," except they don't come in the house.
I also have ducks that are pets so far, but I might process a couple. I have never tried duck, so am undecided.
I had a turkey who was a pet, but he tried to kill one of my chickens and I am now awaiting a call from the butcher to let me know he is ready.
Moral of this story - watch out, you might fit nicely in my freezer if you mess with my chickens!