Here’s video of the natural-and-unnatural phenomenon that led to the 2011 Ig Nobel Prize in biology. That prize was awarded to Darryl Gwynne (of CANADA and AUSTRALIA and the UK and the USA) and David Rentz (of AUSTRALIA and the USA) for discovering that a certain kind of beetle mates with a certain kind of Australian beer bottle.
The scientists published two studies about their discovery:
“Beetles on the Bottle: Male Buprestids Mistake Stubbies for Females (Coleoptera),” D.T. Gwynne, and D.C.F. Rentz, Journal of the Australian Entomological Society, vol. 22, , no. 1, 1983, pp. 79-80.
“Beetles on the Bottle,” D.T. Gwynne and D.C.F. Rentz, Antenna: Proceedings (A) of the Royal Entomological Society London, vol. 8, no. 3, 1984, pp. 116-7.
We are unsure how much — if any — truth underlies the claim (in that video) about whether and why the manufacturer changed the design of the bottle.
(Thanks to Myrmecos for bringing this video to our attention. We had been unaware that the phenomenon was documented in this manner.)