Pegasus, I'm so sorry that someone was so callous as to steal your pets.
I had a pet hen once. We had a school project where we had to build an incubator. If the egg hatched, we got to keep the chick. This chick thought she was human. It was a fight to get her to go with the other hens at night. If you weren't paying her enough attention, she'd run up and start pecking your toes. Unfortunately, a fox got her.
I know the new hens won't replace the others, but I hope they bring you and your family joy.