[sheridan]

This is weird, but the past week my boss hen, Queen of the pecking order, has been mounting the other two?! Is this normal? Or is she just being aggressive?
thanks in advance!

[Honeysuckle]

I would say it's a dominance thing  I'm sure someone will be along soon to give you more of an idea though 

[Ice]

Normal behaviour in my limited experience.  Just her way of maintaining herself as top of the pecking order.