If they are in a broody mood, they will try to hatch golf balls if you gave it to them. lol They will take to eggs that aren't theirs, as long as they are broody enough to sit with them full time. A lot of people use golf balls as a test round to see if the hen will sit with them for days on end...
I'm PRETTY SURE you can order fertilized eggs. Where from I couldn't tell you. Does any of your friends family, or neighbors have chickens (roosters and hens) that they could give you a few eggs to hatch or buy some off of them?
Chickens seem to be very loving creatures! Even with a rough past they don't hold grudges with new owners? I'm sure it takes some time, but that is amazing! :)
I pay as much attention to the chicks I got from tractor supply that I can, and they love to run up to me when I put my hand in the brooder box to hand feed them. I don't know what the behavior of a hen would be after she hatched the chicks. Would it be just like any other mother protecting her...
A lot of people use incubation as a way to hatch their chicks, but that could turn out being a lot of effort!
What are some pros and cons about letting hens hatch their own chicks?