I need help I'm really new to all this. I have 7 chickens 4 black and 3 rr one rr is a rooster. well one of my black ones kinda keeps to herself, two of the rr peck at her sometimes and she runs past them, well this morning I went out to feed them and one had white drool down her neck and it kinda looked foamy. they are getting clean water, laying mash, bread, veggies, and grass, O and sand. the other 6 are doing great not really sure what to do and would appreciate any advise someone could give me. I wannna just go out and hold her, I know how that sounds but i feel sorry for her and have grown attached to them kinda quick . Can anyone help me please?