I have a 9 month old pullet who is a consistent layer and normally docile. In the last two days she has been growling and puffing up at everything - me, my hubby, the other chickens, and the new chicks (8 weeks old) that we have in a separated space in the run during the days (no contact). She is occasionally chasing away the lowest ranking member of the flock. She is not laying on eggs or spending extra time in the nest box. The only other info I have read about this behavior suggests a broody hen, but I don’t know what to think since she is not laying in the nest box. Could it be related to the introduction of the new chicks? We’ve been keeping them separated but able to see/hear each other for almost two weeks, and this behavior has only been a couple of days. Thoughts?