This study proposes an adaptive foldable mechanism inspired by avian limb biomechanics to enhance bipedal gait dynamics in robotic systems. The design integrates a five-bar foldable linkage [1] with compliant joints, aiming to improve terrain adaptability, energy efficiency, and stride variability. While initial simulations using the MuJoCo physics engine suggest potential for energy-efficient locomotion and improved gait dynamics, detailed validation through hardware experiments is ongoing. A static prototype has been developed to study mechanical feasibility , and system parameters such as joint stiffness, mass distribution , and control inputs are being characterized. This work lays the foundation for future implementation and comparative analysis with rigid-link bipedal systems. Applications include humanoid robotics, prosthetics, and assistive exoskeletons.