I got 3 laying hens age 18 weeks old 7days ago to start my first coop.unfortunately day five in and the neighbor's dog got under my fence and killed 2 of the chickens leaving me with 1. I have since addressed the fence line to prevent further intrusion. My question is.. I'm going to pick up 2 replacement hens from the same group of 18week old hens she came from so...will they reconize each other and ajust without to much commotion? there should be no reason to quarantine?