Thanks guys for all of the support but I think my sensible side has taken hold. I feel bad for the girls in the cages but after researching on here about quaranting and all of the headaches people have had, I think I'm changing my mind. I can't risk the chickens I already have after losing the 2. My poor daughter was so heartbroken (not to mention her sobbing mom) when the dog got her favorite.
Even with the quarantine, I think the risks with grown birds of unknown origin is too risky.
And, I need to stay off of Petfinder.com.