HSN Code 0505 refers to "Skins and other parts of birds, with their feathers or down, feathers and parts of feathers, whether or not with trimmed edges, and down, not further worked than cleaned, disinfected or treated for preservation; powder and waste of feathers or parts of feathers." This classification code is essential for identifying bird-related products for import/export purposes based on their nature, composition, and intended use. Common products under HSN Code 0505 include bird skins, feathers, down, and feather waste. Additionally, the GST rate for these items under this code supports accurate trade compliance.