The Stone Zoo was founded in 1905 as the Middlesex Fells Zoo,^[4] a small collection of local animals which soon began to include more exotic species.^{[citation needed]} A new attraction, the Kiddy Zoo, largely based on Mother Goose stories, opened in the 1950s.^[5][6] In the 1960s, the zoo underwent major renovations under the guidance of zoo director Walter D. Stone, including the construction of a large free-flight aviary.^{[citation needed]} The renovation project saw the inclusion of elephants, giraffes, zebras, pygmy hippopotamus, sea lions, and many other large animals.^[7] On March 14, 1969, the zoo was renamed the Walter D. Stone Memorial Zoo, following his death in 1968.^[8]

The zoo continued to operate through the 1970s and 1980s and began breeding endangered species, including orangutans, kinkajous, siamang, and kudus.^{[citation needed]} A polar bear named "Major" arrived in July 1979, and soon became the zoo's main attraction.^{[citation needed]}

On November 12, 1990, state budget cuts caused the Stone Zoo to cease operation.^{[citation needed]} Following public outcry, the state senate established a private, non-profit corporation to manage the zoo, with the help of fund-raising and donations,^{[citation needed]} and the zoo reopened on June 6, 1992.^{[citation needed]} During this transition period, the zoo fell into disrepair and lost all of its large animals, with the exception of Major who remained until his death in 2000.^{[citation needed]} The zoo rapidly declined in quality and attendance.^{[citation needed]} Old facilities were repurposed including using the former giraffe house as an animal education center.^{[citation needed]}

Recent developments edit

In the early 2000s, Zoo New England began a fund-raising campaign to reinvigorate both the Stone Zoo and the Franklin Park Zoo.^{[citation needed]}

On September 24, 2005, Stone Zoo celebrated its 100th anniversary.^[2] The zoo layout was modified to make the grounds interesting and educational, despite the lack of large animals. Many new exhibits were created and existing ones expanded or upgraded. These improvements have been credited with increasing zoo attendance.

A Massachusetts Bay Transportation Authority (MBTA) bus stop is expected to be added to improve access by public transportation.

The major exhibits and animals on display are:

• Alfred Huang North American Crane Exhibit (c. 2012): Home to a seasonal American alligators and year-round whooping cranes and Barrow's goldeneyes (c. 2014).^[9]
• Animal Discovery Center (c. 2017): Home to Arizona blond tarantulas, Blanding's turtles, California king snakes, Chilean rose tarantulas, corn snakes, dyeing poison dart frogs, eastern box turtles, green and black poison dart frogs, honey bees, magnificent tree frogs, Panamanian golden frogs, rosy boas, vietnamese mossy frogs, and vinegaroons.^[9]
• Barnyard: Home to Guinea hogs, Nigerian dwarf goats, miniature zebus, and various chicken breeds. This section also features a 'nature playscape' playground.^[9]
• Caribbean Coast (c. 2018): A 6,000-square-foot (560 m²) walk-through aviary featuring blue and gold macaws, Caribbean flamingos, green winged macaws, Jamaican iguanas, scarlet ibises, and scarlet macaws. Nearby, there is a bush dog exhibit (the only one of its kind in New England) which displays a breeding pair. The pair had two pups, one male and one female born in November 2018.^[9]
• Himalayan Highlands (c. 1998): Home to black-necked cranes, markhors, snow leopards, white-naped cranes, and yaks.
• Mexican Gray Wolf Exhibit (c. 1998): Was home to a single lone Mexican wolf named Roberto. He died in October 2019. In early 2020, the zoo now has a sibling pack of six, adolescent wolves that now roam the hillside habitat.^[9]
• Treasures of the Sierra Madre (c. 2002): Recreating the Sierra Madre mountains, the exhibit houses Chacoan peccaries, white-nosed coatis, cougars, Gila monsters, jaguars, peregrine falcons, ringtails, greater roadrunners, and Seba's short-tailed bats.
• Treetops & Riverbeds (c. 2008): An open-air environment with has exhibits for black-and-white colobuses, North American river otters, and northern white-cheeked gibbons.^[9]
• Windows to the Wild (c. 2003): Home to barn owls, cotton-top tamarins, hyacinth macaws, Inca terns, Linne's two-toed sloths, prehensile-tailed porcupines, red-rumped agoutis, rhinoceros hornbills, and rock hyraxes. A tortoise exhibit featuring a trio of African spurred tortoises opened in the former flamingo grotto in July 2019.^[9]
• Yukon Creek (c. 2000): Simulates the Canadian boreal forest; home to American black bears, Arctic foxes, bald eagles, Canada lynxes, North American porcupines, and reindeer.^[9]

Seasonal exhibits edit

• Birds of prey (c. 2005): Outdoor wild bird demonstrations through contract with the World Bird Sanctuary of St. Louis, Missouri, running Memorial Day through Labor Day
• An annual holiday light exhibit, ZooLights, with seasonal displays from Thanksgiving through Christmastime

•   Media related to Stone Zoo at Wikimedia Commons
• Official website