Squeaky hatched a clutch of beautiful Muscovy ducklings! What does it take to hatch a duckling you ask???? The hen (aka lady duck) will lay one egg a day until she has a clutch that meets her satisfaction- the size of the clutch varies from hen to hen. Violet typically sits 8 and Squeaky sits 14! Once she's gathered a clutch, the hen will "sit tight" on the nest. In order for fertilized eggs to hatch, the hen sits on the nest, basically non-stop, for 35 days.