The Chinese did this in the late 50's with sparrows; they managed to bring them close to extinction in a (spectacularly failed) attempt to increase crop yields.

The Chinese did this in the late 50's with sparrows; they managed to bring them close to extinction in a (spectacularly failed) attempt to increase crop yields. https://en.m.wikipedia.org/wiki/Four_Pests_Campaign https://en.m.wikipedia.org/wiki/Four_Pests_Campaign