Why do ducks have flat beaks?

Ducks have flat beaks, or bills, that are adapted for their feeding habits. The shape allows them to effectively filter food from water and mud, as they often forage for aquatic plants, small fish, and invertebrates. The flat structure, combined with specialized features like lamellae, helps them sift through sediment and capture their preferred food items efficiently. This adaptation is essential for their survival in diverse habitats.