In 1890, a New Yorker named Eugene Schieffelin acted on a plan to introduce in North America every bird mentioned in the works of the playwright William Shakespeare. After importing 60 starlings from Europe, he subsequently released them in Central Park.
Those original 60 have since turned into a population of more than 200 million.
While they may have hypnotic murmuration displays, Starlings have become a major invasive pest. Capable of devouring entire fields of wheat, they're also prone to kicking other birds out of their nests, killing eggs and fledglings in the process.