My rooster sometimes makes a loud noise by opening his beak wide, it does not sound like anything i have ever heard come out of a rooster. I heard that gapeworms make a chicken open it's mouth wide as if yawning. I wonder what the symptoms are of a chicken that has worms.(i'm worried cuz my birds eat a lot of earthworms they love them) Also is there any natural remedies to get rid of parasites and worms??