Only 3% of all avian species possess a phallus, or male intromittent organ. Among these happy few, especially ducks are famous for their relatively long corkscrew shaped penises. From personal experience and observation, I know a flaccid, stretched mallard (Anas plathyrhynchos) penis may measure up to 18 cm, and the Argentine lake duck (Oxyura vittata) […]
About: Kees Moeliker
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Posts by Kees Moeliker:
Infanticide in Japanese ducks
Digging into the life of the spot-billed duck in Japan (see my previous blog entry), I found a true ‘first’ of peculiar behaviour in this species, as published by the researchers Tetsuo Shimada, Kazuyuki Kuwabara, Saori Yamakoshi, Tomomi Shichi in Journal of Ethology 20(2), September 2002. Apparently, ducklings not only have to fear ferocious carp. […]
Duckling feeding fish? Nope.
Remarkable duck behaviour always has my full attention. When a video, taken in Japan, titled ‘baby duck feed the carp’ was posted on YouTube, I studied it carefully. That’s because there is no previous report of any duck engaged in feeding fish (in contrast to reports of? ducks feeding on fish — although that is […]