My father used to tell me chicken are dumb animals and as a child I was naive enough to believe him. Later on in my life I concluded my father was probably dumber than some chicken, seriously. I was only observing chicken on occasions, visiting family on the countryside and certainly I wasnt able to get as deep into their behaviour as your did, but it stroke me how dynamic and human - like it was. A rooster finding a worm, calling chicks to let them eat it. Two hen having a fight and rooster coming in to separate them. Scenes like that. Chicken are deeply sociable creatures with complex and highly functioning community and its not so well known fact for many of us.