The zoo was founded in 1868, when the Lincoln Park Commissioners were given a gift of two pairs of swans by Central Park's Board of Commissioners in New York City. Other animals were soon donated to the park, including, a puma, two elk, three wolves, four eagles, and eight peacock. In 1874, a bear cub from the Philadelphia Zoo was the first animal purchased by the zoo. The bear became quite adept at escaping from its home and could frequently be found roaming Lincoln Park at night. In 1884, reportedly the first American bison born in captivity was born at the Lincoln Park Zoo. At this time, the species had almost been hunted to extinction in the wild—in 1896, the United States government purchased one bull and seven cows from the Zoo's bison herd to send to Yellowstone National Park to assist in the species' revival.