This happens with my chickens! Two egg laying boxes in two corners. Can swap the boxes but it's the corner they yearn for (the preferred corner sometimes changes)!
Not laying right now but that's how it goes when the egg laying boxes are in use! The boxes are chicken-sized. I have pictures of two stubborn chickens squeezed together in one box.
Yesterday, Skipper lost again, only this time he decided that the other hammock was satisfactory. The whole charade is nothing short of adorable as long as it doesn't get worse than squeaking.