for more than literary reasons:--

Nugi-kakuru [2]
Haori sugata no
Kocho kana!



[Like a haori being taken off -- that is the shape of a butterfly!]

Torisashi no
Sao no jama suru
Kocho kana!



[Ah, the butterfly keeps getting in the way of the bird-catcher's pole! [3]]

Tsurigane ni
Tomarite nemuru
Kocho kana!



[Perched upon the temple-bell, the butterfly sleeps:]

Neru-uchi mo
Asobu-yume wo ya --
Kusa no cho!