We have 4 adult white Leghorn hens, 1 white Plymouth Rock hen and the Buff Orpington hen that is having the problems. Everyone got along great before and while she was sitting out Buff Orpington rooster got along great with the other hens. Then we got a white Leghorn rooster and separated them...
Ok, two problems! 1) We have a Buff Orpington hen and she had ruined her eggs that she was sitting (she kept getting on and off at first) so we swapped out for some bantams and some large breed mixed eggs. Well, they started hatching yesterday and she began KILLING the chicks as they hatched...