Just curious if chickens hold grudges. If you have older ladies and then give attention to new additions also, will they be nasty? Are chickens capable of grudges? So far, all my girls are pretty relaxed but I am about to introduce the young with the experienced. They can see me trying to coax the teens when I call (aka-bribe with treats) But then again- I don't have any roos. The big girls get their share of treats also. Thoughts?