On June 5, 1995, a mallard duck slammed into the window of the Natural History Museum in Rotterdam, the first big step on its journey into history. Kees Moeliker, the museum’s curator, subsequently published the first scientifically recorded description of homosexual necrophilia in the mallard duck (click here for PDF). The account was later honored with an Ig Nobel Prize.
Now, every year, Kees Moeliker re-enacts the historic event. He invites you to attend and participate.