This was what a hen night should be: just a group of good friends getting together to enjoy unpretentious fun away from other people’s eyes.

There is a great quantity of eating and drinking, making love and jilting, laughing and the contrary, smoking, cheating, fighting, dancing and fiddling; […] yokels looking up at the tinselled dancers and poor old rouged tumblers, while the light-fingered folk are operating upon their pockets behind.

The divide between proverse and obverse markings is obvious, particularly in resting burrows which form the most common type in this group.

For example, if a bird mismemorizes the tutor song, and produces a perfect copy of its inaccurate template, then BOS itself could be a closer approximation of the template than tutor song.