I just got my ladies this past spring so everything that I see is new to me. I just went out to check on them and watched one gently pecking at the feathers under another's beak. Both were very calm as this was happening. I am very familiar with cats grooming each other and so I wonder if this is what they were doing. The one being 'groomed' has been on the receiving end of a lot of aggressive pecking of late (she even lost the vision in one eye a few months ago because of this). I've been able to 'successfully' reintroduce her to her sisters but I've been keeping a close watch on them to make sure she is ok, hence why I was able to witness this new behaviour. I'm just curious as to what you experts think this behaviour means.