Some bird species of aquatic environments, particularly the aforementioned flightless penguins, (but fully developed in Cracidae) possess a penis,

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Feb 19, 2012 · How do birds have sex? – The males of most bird species do not have a penis, both sexes have a multi-tasking orifice called the cloaca.

That’s particularly strange, because male birds do have the genetic coding necessary for a penis, and they do briefly have genitalia as embryos.

A penis (plural penises or penes /-n iː z /) is the primary sexual organ that male s use to inseminate sexually receptive mates (usually females and

To lose a penis once might be regarded as misfortune… Penises have been lost several times in the evolution of birds. Cohn’s team have only compared two groups

Warning, if you can’t tell by the title of the post, it’s going to get a little blue in this post. Most of us have heard the song, “Birds Do It, Bees Do It

Some bird species, most notably several species of swans, geese and ducks, do not have cloacas, but instead male birds have an actual phallus (penis)

North American scientists have discovered the longest bird penis ever – a 42.5cm organ belonging to a duck. Dr Kevin McCracken of the University of Alaska, Fairbanks

Why Many Birds Don’t Have Penises. In avian species, a gene induces programmed cell death during development in the area where a phallus would otherwise grow.