I recently re-homed a 3 year old BCM hen. She has had a bulbous/bulging/swollen base of her comb for quite a while, possibly when she first came into lay, so I didn't think anything of it until the new owner asked about it. Is this normal you think? Other than bumble foot about 8 months ago and a semi-recent habit of egg eating, she has been healthy. They are on a layer feed with occasional scraps and free ranging. No other issues with any coop mates. She lays occasionally.