Sex,Ducks and Rock&Roll: The mystery of the vanishing bird penis is actually an important question & the cloacal kiss.......not so colloquial?

                                  drawing/collage  by marguerita
For a strange sexual history, it’s hard to beat birds. In some lineages, bird penises have evolved to spectacular lengths.
 Ducks, for example,have corkscrew-shaped penises that can grow as long as their entire body. They use their baroque genitalia to deliver sperm to female reproductive tracts that are also corkscrew-shaped — but twisted in the opposite direction. In other lineages of birds, however, the penis simply vanished.http://www.nytimes.com/2013/06/06/science/the-sex-life-of-birds-and-why-its-important.html