Consider studies done on penguins: https://www.researchgate.net/publication/229884855_Homosexual_Mating_Displays_in_Penguins https://www.researchgate.net/public

Consider studies done on penguins: https://www.researchgate.net/publication/229884855_Homosexual_Mating_Displays_in_Penguins https://www.researchgate.net/publication/229884855_Homosexua... > Some homosexually displaying males eventually paired with females, but such males were significantly slower in heterosexual pairing than males that did not display homosexually. In two extraordinary cases, same-sex pairs learned each other’s calls, an essential step in the pairing process. The frequency of such pairs was much lower than among displaying couples, significantly so for males. Finally, the frequency of homosexually displaying pairs was significantly lower than expected from random assortment of displaying birds, for both males and females. We examined possible explanations for same-sex display and its biological significance. A population sex-ratio bias in favor of males and high concentration of male sex hormones may help to explain non-reproductive homosexually displaying pairs.