So last year I got my first ever 3 little chicks, and 4 new chicks the beginning of this year. Of course, it took quite a while for the existing chicks to get used to the little ones but the older chickens would never do anything more then pecking their head or chasing them around as they were getting used to each other. But during the period where they were getting used to each other one of the older hens went broody and decided she wanted to be a mother, so I picked up some fertilized eggs from a neighbor and now we have beautiful 11 week old chicks! With them being 11 weeks old we wanted to start transitioning them to moving into the existing flock. But earlier today we lost power so I grabbed the mama and brought her outside just for a few minutes so then she can be under the misters we have as it is a hot day and the power turning off turned off her fan. But immediately, her sister (who they have grown up with each other since they were babies) started attacking her! Now we did separate the mama and her babies once they hatched to put them in a safer area from the bigger chickens, but everyday we would bring both the mama and her chicks outside along with the older chickens to free range a little, we just had a fence separating the two, but every time one of her sisters (the same one that attacked her earlier today) would jump the fence and just hang out on that side with the mama, only time the mama would be upset is if that chicken got to close to her chicks, then they would get in a little tussle that I would break up. But the past 2 weeks we would bring each group out at different times of the day just because 1 of the older chickens got fowl pox and we didn't want the lil babies getting exposed to it (she is all better now!) But anyways, in just the past 2 weeks could the older hen had forgotten about her sister? Is the fighting they get into just regular pecking order fights? Because the only pecking order 'fights' I have seen is just pecking on the head and chasing. Are they not going to have the bond that they had prior to the hen being a mama? Just some interesting behaviors I noticed, my plan right now is to move the mama and her babies outside right next to the existing flock but still separated. Any tips or advice? I am a new chicken mom so anything will be helpful! (also sorry for bad grammar or any unnecessary information)