Hi all, I had three black australorp hens but have sadly lost 2 of them, likely due to moldy food. The surviving hen is awfully lonely and breaking my heart. Once I know she's okay and it wasn't a disease killing the others off, I'd like to introduce new chickens to her. I'm interested in getting an Aracauna and Golden Comet or Barred Rock to replace the two I lost. But is it okay to mix breeds like that? And is it okay to introduce pullets to our 1year old hen or should we get older hens? Any advice is welcome!