We bought four new hens that have finished their quarantine period and ready to introduce into our little flock. Two of our original three hens seem to really dislike two of the new hens. Or original flock is 1 Barred Rock, 1 "Easter Egger" (not sure if she's Americana or not quite), and one Leghorn. The new hens are 2 Partridge Rocks and 2 Golden Spangled Hamburgs. The BR and EE have apparently decided they don't like 1 of each breed of the new hens. The one little Hamburg girl will fight back...neck feathers puffed up, feet kicked out and everything. Once they all got in the house together (minus the Leghorn who decided she'd rather roost alone in the now empty quarantine house rather than deal with the drama in the main coop) the EE was okay with everyone else, but BR started pecking at the poor Partridge Rock that she dislikes. I put my hand out to stop her from pecking at the poor new girl and she (the BR) bit me! She's normally a sweetheart and will climb into my lap to eat when I hand feed them. Is this normal behavior when you introduce new birds to an already established flock? Will they get over it?! I feel SO bad for these new girls. Last night the new girls all got into the "loft" nest box area to sleep. BR seemed fine once the new girls were off her preferred roost. Thanks!!