A stimulatory phalloid organ in a weaver bird

M. Winterbottom (), T. Burke () and T. R. Birkhead ()
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M. Winterbottom: University of Sheffield
T. Burke: University of Sheffield
T. R. Birkhead: University of Sheffield

Nature, 1999, vol. 399, issue 6731, 28-28

Abstract: Abstract The males of very few bird species possess a penis1. Buffalo weavers, Bubalornis spp., are unique in possessing a false penis, or phalloid organ2,3. We find that, after protracted copulation, the phalloid organ generates an orgasm-like state in males, a phenomenon not known in any other bird. The possession of a phalloid organ and orgasm may be associated with the buffalo weaver's unusual mating system in which there is intense sperm competition.

Date: 1999
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DOI: 10.1038/19884

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