Louis the Plymouth Rock is severely bullying my little favorelle whom is being pecked severely on the comb and wattles mainly by the BPR and also a little by the other blue leghorn. Alltogether, there are only 3 chooks, each about 6-7 months old, which I bought as chicks all together from the same breeder. They're living in a predominantly open grass and shrubbed space of about 30 m2...there are two separate nesting coops which fit comfortably 2-3 chooks when roosting (hence having two). The BPR is the main antagoniser and is extremely aggressive whereas the poor favorelle, which has always had a highly timid and soft nature, has relegated herself to one of the nesting boxes in the coop where she essentially sits all day coming out only once or twice to eat and drink. I've isolated her into this coop which has a small extension run coming off the front where she's free to move around and scratch a bit...not that she does often, seeing as the other two birds run to taunt her whenever they spot her out of her nest box. Its been several days of isolation for Camembert the Favorelle, and nothing seems to have changed...I'm really not sure what's causing this extreme agression...are these breeds incompatible?