If the birdlife on earth didn’t have enough to worry about, like dwindling habitats, air pollution and the hostile ecosystem of cities, they now have the added perplexity of going gay. A study conducted by researchers from the University of Florida and Peradeniya University in Sri Lanka found that relatively low doses of methylmercury in the diet of male ibises resulted in their pairing up with each other, snubbing the females, to the extent of building nests together (in other words, moving in together). Methylmercury has been seeping into groundwater from industries for ages now.