I have had my 2 Black Australorps (dob 7/28) and 2 Speckled Sussexes (dob 8/4) chicks since August 8th. They get along great. Decided to add one more chick to the flock while I was at the feed store and now she is the bully. She is a Delaware (dob 7/28) and was fine for a couple hours with girls and she started pecking and pulling wings and feathers on 3 of them. She seems to leave the "runt" alone. I put her in "solitary" but facing the girls in their crate. After a couple hours, I put her in with the 4 girls again. All was peaceful for a half hour and then she was back at pecking again. Back to solitary for the night. She "cried" for the longest time , but eventually fell asleep. (is odd she never "napped" as the other gals "napped" on and off during the day.) She was very calm and quiet this morning and seemed to learn her lesson. I put her back with the girls, they ate and drank and scratched. Looked like all was well...back to pecking and back to solitary. Anyone have any suggestions on what to do? It seems the reverse is happening, that the new kid is pecking the established and not the other way around. I haven't seen this question posted on the forum. Help...I am thinking maybe taking her back and get a younger one that was dob 8/4?