Steampunk Nautilus Submarine Seed Vessel

Construct the main cylindrical hull using steam-bent thin cedar planks to achieve the rounded submarine silhouette. Secure the staves around circular bulkheads made from marine-grade plywood.

Incorporate circular brass-rimmed portholes cut into the hull to act as feeding portals for the birds. Use small wooden perches mounted below each porthole to allow for easy landing and access.

Fabricate an external skeletal ribbing from bent copper wire or thin cedar trim to wrap around the hull for an authentic structural aesthetic. Attach the rivets using brass upholstery tacks to enhance the industrial vintage look.

Apply a weather-resistant finish with a warm amber wood stain and protective spar varnish. Install a hinged top hatch for easy refilling of the inner seed hopper.