Also, two male ducks, one of them dead, a scientific paper, 2001: "Moeliker, C.W., 2001 – The first case of homosexual necrophilia in the mallard Anas platyrhy

Also, two male ducks, one of them dead, a scientific paper, 2001: "Moeliker, C.W., 2001 – The first case of homosexual necrophilia in the mallard Anas platyrhynchos (Aves: Anatidae) – DEINSEA 8: 243-247 [ISSN 0932-9308]. Published 9 November 2001" http://www.hetnatuurhistorisch.nl/fileadmin/user_upload/documents-nmr/Publicaties/Deinsea/Deinsea_08/Deinsea_8_15_Moeliker_.pdf http://www.hetnatuurhistorisch.nl/fileadmin/user_upload/docu... The talk about it: https://www.ted.com/talks/kees_moeliker_how_a_dead_duck_changed_my_life/transcript?language=en https://www.ted.com/talks/kees_moeliker_how_a_dead_duck_chan... "Kees Moeliker: How a dead duck changed my life"