My "flock" is small consisting of one Rhode Island Red and one Wyandotte both are pullets, no rooster. The RIR doesn't like to share, scratch, mash or the same roost. The Wyandotte roost at the opposite end of the coop, no big deal I guess. She doesn't bully in the sense of getting physical with the other and they range side by side with no arguing or the likes. I have a Wyandotte roo on the way and will introduce him within the week but I dont think he is going to change her behavior. As long as I dont see any sign of her getting mean she will remain. I am thinking adding a few more hens might be enough to preoccupy her. I just hate not seeing them in harmony. any thoughts I get too empathetic and treat the birds too much like children and not critters. Also the RIR stopped laying in the selection of nests and is dropping very early from her roost some dont break some do. but she lays very very early int he morning Im thinking at the break of dawn. The Wyandotte has picked her nesting box and does just fine.