At first sight this bird looks quite like a typical parotia, bearing a glossy breast shield and elongated, thread-like occipital plumes, however, it only had two of them instead of the usual six, so its vernacular name Duivenbode’s Six-wired Bird of Paradise should actually rather be Duivenbode’s Two-wired Bird of Paradise.
The form is known from two male specimens and is now known to be a hybrid of the Superb Bird of Paradise (Lophorina superba (J. R. Forster)) and the Western Parotia (Parotia sefilata (Pennant)).
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References:
[1] Clifford B. Frith; Bruce M. Beehler: The Birds of Paradise: Paradisaeidae. Oxford University Press 1998
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edited: 26.02.2020