Flying duck orchid..

More males equal more pollinators for the orchid! Plus, an overabundance of males means that they will be more desperate when seeking a female mate because there will be more competition! Desperate, sex-starved male sawflies are less discriminating and perhaps more willing to copulate with an orchid that kind of, sort of, maybe looks like a female, especially if he squints a bit. It’s good enough for him and works out well for the orchid.