This study delves into the intricate physics behind the structural coloration observed in peacock feathers, aiming to uncover the underlying mechanisms responsible for their vivid pigmentation. Through a rigorous investigation utilizing high-resolution optical and scanning electron microscopy, the study elucidates the microstructural components of feathers, providing insights into the mechanisms governing diffuse reflection at various angles. The findings highlight the significant roles played by thin film interference and photonic crystal structures in producing the iridescent qualities of peafowl plumage. Additionally, the paper explores the impact of macroscopic randomness and structural variation in enabling color visibility from multiple viewing angles. This research advances our understanding of natural structural color phenomena and contributes to laying the groundwork for potential applications in advanced optical materials.