A farmyard roll call: a cockerel crowing on the roof, a bull threshing corn, maids making hay, ducks swimming off downriver. The phrase 'cock and bull story', meaning a tall tale, is thought to come from rhymes exactly like this one.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
The cock's on the housetop blowing his horn;
The bull's in the barn a-threshing of corn;
The maids in the meadows are making of hay;
The ducks in the river are swimming away.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition