x Epimachus f. fastuosus
The astrapian sicklebill, also known as the green-breasted riflebird, is a bird in the family Paradisaeidae that believed to be an intergeneric hybrid between an Arfak astrapia and black sicklebill. This explanation was proposed by Erwin Stresemann who used the same explanation for the Elliot's bird of paradise. The two forms are substantially different and the latter's validity is still under question.
- Frith & Beehler (1998), p.507.
- Frith, Clifford B. & Beehler, Bruce M. (1998). The Birds of Paradise. Oxford: Oxford University Press. ISBN 978-0-19-854853-9.
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