Gay Ducks

The last living female Blue Duck in the UK will not be mating with either of the two remaining males of the species (named Ben and Jerry), because the dudes much prefer each other's company.

The cute part is that although the drakes were completely uninterested in the lady duck, they've become inseparable companions since being introduced to each other. It's slightly sad that this will ultimately mean the end of Blue Ducks in the UK, but it's better that the last ducks be happy together instead of being forced into some loveless marriage. Thanks to John for the tip.