Between 1910 and 1913, surgeon George Levick traveled with Robert Scott through Antarctica on a mission to reach the South Pole. Along the way, Scott's team recorded their observations of Antarctica and its wildlife, observations that were later published in scientific journals. At least, most of the observations were published. Some of Levick's notes ended up being left out of the official journals, only printed in pamphlet form, like some kind of academic Tijuana Bible.
The reason: Those notes were full of Levick's horrified documentation of depraved penguin sex acts—tales so unfit for polite society that Levick actually wrote most of them in Greek, rather than English.
Recently rediscovered and translated, these notes have now been published for the first time in the journal Polar Record. The excerpts printed on the LiveScience site read like something from an addendum to Heart of Darkness.
"This afternoon I saw a most extraordinary site [sic]. A Penguin was actually engaged in sodomy upon the body of a dead white throated bird of its own species. The act occurred a full minute, the position taken up by the cock differing in no respect from that of ordinary copulation, and the whole act was gone through down to the final depression of the cloaca."
In another entry, this one written in English on Dec. 6 of that year, he wrote: "I saw another act of astonishing depravity today. A hen which had been in some way badly injured in the hindquarters was crawling painfully along on her belly. I was just wondering whether I ought to kill her or not, when a cock noticed her in passing, and went up to her. After a short inspection he deliberately raped her, she being quite unable to resist him."
Levick described penguins that waddled about the colony's outskirts terrorizing any straying chicks as "little knots of hooligans" in his pamphlet. "The crimes which they commit are such as to find no place in this book, but it is interesting indeed to note that, when nature intends them to find employment, these birds, like men, degenerate in idleness."
Thanks Chris Baker!