One of my 4-week-old Australorp chicks just got into a scuffle with one of her 5 sisters. She managed to pick out a wing feather and was prancing around the brooder with her new trophy. I got the feather away from her quickly because I did not want her to fancy it so much that she would want to start a collection. Hopefully this is not the start of "Hen-ibal" the Cannibal. They have plenty of room, are eating well and normally get along well with only minor issues with each other. She just seemed to have a tantrum.