So what if you put a country frog in the big city—would he change his tune? These researchers wondered, too, so they transplanted a total of 112 males from forest to town or vice versa for at least four consecutive nights and monitored them to see how their mating calls changed. (Don’t worry, they didn’t just throw them out into their new environments. They used small mesh enclosures to ensure no harm came to the frogs, but that they were still exposed to their surroundings.) It turns out, túngaras from the forest don’t seem to increase their song complexity, at least in the span of a few days. But take a slick city frog and put him in the jungle and he adapts right away. Urban túngaras quickly learned that their fancy singing wouldn’t work the same out in the wilderness as it did in town, toning down the complexity to account for the newfound threat of bats and midges.