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SAY WORD! PENGUINS ARE F**KING FREAKS!

Necrophilia, rape and pedophilia are just some of the sex acts an Antarctic explorer observed in Adélie penguins in 1910 and recorded in a pamphlet so graphic that it's been hidden for over 100 years.

Dr. George Levick was so disturbed by the "hooligan" penguin behavior he saw during the British Antarctic Expedition of 1910 that he wrote the entire pamphlet, titled "Sexual Habits of Adélie Penguins," in Greek in order to prevent it from being read.

"There seems to be no crime too low for these penguins," Levick writes in the four-page pamphlet, which was published in 1915 and recently discovered and translated at the Natural History Museum in London.

"It is interesting indeed to note that, when nature intends them to find employment, these birds, like men, degenerate in idleness," Levick adds.

Levick, who was a medical officer on the ill-fated expedition, wrote his pamphlet on the penguins at Cape Adare, home to the largest Adélie penguin colony in the world. To date, he is the only researcher to have observed an entire breeding cycle at the colony.

Five members of the British Antartic expedition team died on the journey back from the South Pole in 1912. Levick remained at Cape Adare and did not take part in the trek to the South Pole.

The explorer recorded and commented on almost every aspect of the penguins' sexual behavior, according to the Natural History Museum's news release, which explains that Levick looked at the frequency of the penguins’ autoerotic behavior, the behavior of young unpaired males and females including necrophilia, sexual coercion, the sexual and physical abuse of chicks, non-procreative sex and homosexual behavior.

The pamphlet wasn't included in the expedition's official reports from 1915. At the time, however, a keeper of zoology at the museum made 100 copies of the paper to distribute among scientists. Only two copies are known to exist today, the First Post reports.

Douglas Russell, bird curator at the museum, recently found a copy of the pamphlet hidden among the bird collection at the museum.

"Levick's notes were decades ahead of their time and possibly the first-ever attempt to reveal the more challenging aspects of bird behavioral strategies to the academic world," Russell said.

Scientists have found explanations for the penguins’ sexual behavior in the years since Levick's discovery.

Male penguins, for example, engage in necrophilia because they are still sexually inexperienced by the time breeding cycles begin.

"Many respond to inappropriate cues. Hence the seeming depravity of their behavior," Russell told The Guardian. "For example, a dead penguin, lying with its eyes half-open, is very similar in appearance to a compliant female.

Same-sex behavior has also been recorded in several other bird species, including barn owls, black swans and ostriches.