I have two Americauna chickens in a coop with a tractor for them to mess around in several hours a day in my back yard. I don't know where the activity is occurring, but one of them is sleekly feathered and the other one looks like she molts way too often. I'm suspecting Miss Sleekly Feathered is plucking or pecking at the other. They are both laying pretty regularly and they eat a ton of kitchen scraps and have pellets and water available when they are in the coop. Is this normal chicken behavior, i.e. "pecking order"? Should I worry?