Who killed Cock Robin?

"Who Killed Cock Robin" is an English nursery rhyme, which has been much used as a murder archetype in world culture. It has a Roud Folk Song Index number of 494. Here is the first verse of the rhyme:

Who killed Cock Robin?

I, said the Sparrow,

with my bow and arrow,

I killed Cock Robin.

The rhyme has been often reprinted with illustrations, as suitable reading material for small children. Although the song was not recorded until the mid-eighteenth century, there is some evidence that it is much older. The death of a robin by an arrow is depicted in a 15th-century stained glass window at Buckland Rectory, Gloucestershire, and the rhyme is similar to a story, Phyllyp Sparowe, written by John Skelton about 1508.