Check out this description:

The pamphlet, declined for publication with the official Scott expedition reports, commented on the frequency of sexual activity, auto-erotic behaviour, and seemingly aberrant behaviour of young unpaired males and females, including necrophilia, sexual coercion, sexual and physical abuse of chicks and homosexual behavior . . . .”

Now get this.  This paragraph refers to documented behaviors of penguins in Antarctica. And now we have some evidence that necrophilia is “natural,” for those who are seeking such a justification.