“plainsong cuckoo grey”
Cultural Context
Act 3,
Scene 1
Lines 114-121
Bottom
[Sings]
The cuckoo bird is so named because of the sound it makes. Although cuckoos pair off into couples, the female sometimes lays her eggs in the nest of some other male than her partner. For this reason the word "cuckold" refers to a man whose wife is cheating on him. According to the lyrics of Bottom’s song, many men think that the bird is calling them a cuckold, but they dare not deny it, fearing that the cuckoo bird knows something they don't.
(Black-billed Cuckoo, Coccyzus erythropthalmus by John James Audubon, 1830)