1986: The meltdown of a nuclear reactor at Chernobyl, in northern Ukraine, released a cloud of radioactivity that affected not only the nearby human population, but also, indirectly, the stork population. Storks hunted for beetles, grasshoppers, frogs and other small prey in cultivated fields and meadows. When the Soviet authorities ordered the evacuation of residents from a wide area around the power plant, the abandoned fields and meadows became overgrown with tall grass, bushes and saplings. These made it difficult for the storks to forage for food, which in turn led to a decline in their numbers.
Source: Bird Census News (2000)