More Avian Livestock (Patreon)

Sea geese are occasionally bred for meat, but they usually fill a more horse-y kind of livestock role. They're passable at pulling carts on land, good at pulling boats through calm waters, and excellent at pulling air sleds. Air sleds are basically an airplane wing full of goods that is pulled through the air by either sapients, livestock, or teams of both. It's much faster than shipping goods by boat, and was historically used a lot to carry cargo from island to island.