Four girls with four different names for one, off to find a bird's nest, in a rhyme built for practising names and counting. They leave four eggs behind, so nobody comes away with too much.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
Elizabeth, Elspeth, Betsy, and Bess,
They all went together to seek a bird's nest;
They found a bird's nest with five eggs in,
They all took one, and left four in.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition