Recently, two of my 8 week old pullets died over night. I had no idea what was wrong since they hadn't been sick. Then last night another one died. So now I have one lonely hen. I have chicks in my brooder but they are too small to be outside with the lone hen. I would get a few new pullets her age but I understand its important to quarantine the new ones before introducing them. BUT at this point would it matter? My hen is definitely lonely and I don't want her to suffer. However, I'm also a little concerned that whatever killed the other three is still there and will kill any new hens. Any advice?