This study aims to investigate the skeletal adaptations of three duck species: the Mallard, Tufted Duck, and Green-Winged Teal. Ducks play a critical role in wetland ecosystems by aiding in seed dispersal and nutrient cycling. To understand how their skeletal structures support different survival strategies and modes of locomotion, this research focuses on the tibiotarsus and humerus bones. Bone samples were collected from deceased ducks, cleaned, and measured for length, weight, and density. Using dual-energy X-ray absorptiometry, bone mineral density (BMD) and content (BMC) were quantified, while mechanical properties such as yield force and stiffness were assessed through a 3-point bending test. The findings demonstrate that each species exhibits unique bone characteristics suited to their specific behaviours and habitats. Mallards, known for their versatility, possess stronger and denser bones, which are advantageous for various environments. They show the highest Seedor index, indicating robust bone structure. Teals, being smaller and capable of rapid flight, have lighter and less dense bones, which are beneficial for quick movements in shallow wetlands but exhibit lower BMD and BMC. Tufted Ducks, which are adapted for deep diving, have bones that are particularly strong and stiff, allowing them to forage effectively underwater. These variations in bone structure and density suggest adaptations to each species’ specific ecological strategies and survival mechanisms, reflecting their ecological roles and survival strategies. Understanding these adaptations may provide valuable insights into the functional morphology of ducks.