The buff-breasted paradise-kingfisher (Tanysiptera sylvia) is a bird in the tree kingfisher subfamily, Halcyoninae. It is native to Australia, New Guinea and the Bismarck Archipelago and migrates in November from New Guinea to its breeding grounds in the rainforest of North Queensland, Australia. Like all paradise-kingfishers, this bird has colourful plumage with a red bill, buff breast and distinctive long tail streamers.