In 1851, New York released house sparrows to eat caterpillars damaging city trees; within 50 years, the birds had colonised nearly the entire continental US | World News
In 1851, New York released house sparrows to eat caterpillars damaging city trees; within 50 years, the birds had colonised nearly the entire continental US. Image credits: Wikimedia Commons. In 1851, a small group of birds was released in Brooklyn to eat insect pests and protect the city’s trees. The house sparrow, a familiar bird…
