"The Parliament of Bees" is the work on which Day's reputation chiefly rests. The piece contains much for which parallel passages are found in Thomas Dekker's "Wonder of a Kingdom" (1636) and "The Noble Spanish Soldier" (printed 1634). The passages which echo "The Noble Spanish Soldier" include references to speaking Spanish which are only meaningful in the context of Dekker's play; this suggests that the Dekker play is the original, a possibility reinforced by the consideration that there is no known edition of "The Parliament of Bees" earlier than 1641.