A Tiny Turtle Raised At A Massachusetts Zoo Disappeared Into The Wild In 2011. Fourteen Years Later, Her Own Babies Hatched

As the sun began to set one evening last June, about 40 people gathered at the edge of a wetland in Concord, Massachusetts, to watch two small turtles swim into Great Meadows National Wildlife Refuge. Each was nine months old and weighed about a third of a pound. Their mother, a Blanding’s turtle nicknamed Ivy, had been released at the same refuge in 2011 and then disappeared.

Ivy is the first turtle from the refuge’s headstart program known to have offspring of her own, according to the U.S. Fish and Wildlife Service. Headstarting raises young turtles in captivity, usually for at least their first winter, before releasing them, and it has become a popular tool for rescuing turtle populations. Proving it works can take decades, because these turtles grow slowly and breed late. Ivy’s family shows that at Great Meadows, a headstarted turtle can survive to adulthood and reproduce in the wild. Studies from Massachusetts, Illinois and Toronto help show what her story proves, and what it does not.

Why Is Ivy’s Story Such A Milestone?

A genuine first, although not proof of recovery.

In 2010, Zoo New England staff were monitoring Ivy’s mother when she left the refuge’s wetlands. She traveled more than 1.2 miles and nested in a mulched flower bed at an office park. The nest produced 11 hatchlings: 10 males and one female, a seven-gram turtle who would become Ivy.

Ivy spent her first winter at Stone Zoo. A hatchling that winters in the wild comes out in spring no bigger than a coin. Headstarted turtles instead spend those months indoors in warm water with plenty of food, and by spring they are big enough that predators are less likely to eat them. Ivy was released the following spring, marked with shell notches for later identification, and went unseen for 12 years.

Zoo New England’s field team found her again during a routine survey in July 2023. She weighed more than 900 grams, adult-sized by the team’s standards. The team had no radio transmitters left that season, though, so it logged her measurements and let her go. In 2024, she was spotted heading back to the wetland with dirt on her shell, signs she had likely just nested, and the team fitted her with a transmitter.

On June 25, 2025, senior field conservationist Jimmy Welch found her in a wildflower meadow protected as nesting habitat. She began digging around 9 p.m. and started laying at 2:30 a.m., eight eggs in all. Seven hatched that fall.

That matters because releasing turtles is only half the job. As Welch said in a Zoo New England statement, “the goal is to have the population become self-sustaining, and that can only happen when the next generation start laying eggs of their own.”

Did Headstarting Change Great Meadows?

Likely, although nest protection ran alongside it.

A 2024 Northeastern Naturalist study by Zoo New England and University of Nevada, Reno researchers tracked the Great Meadows population. They counted turtles with shells longer than about 4.3 inches, which leaves out the youngest juveniles. By that measure, the population fell from an estimated 135 in 1973 to about 54 in 2004. By then, most females were old turtles first marked as adults in the 1970s, and young turtles appeared scarce.

The team began protecting nests in 2003 and began regularly releasing headstarted turtles in 2007. By the end of 2023, it had released 683 headstarted juveniles. The researchers drew on nearly 20 years of monitoring, including 430 “turtle-years” of radio tracking (one turtle followed for one year counts as one). Two different models estimated 204 or 316 turtles above the size cutoff in 2023, roughly four to six times the earlier count.

Trapping results pointed the same way. Over time the population skewed younger, and researchers caught more turtles for the same amount of trapping. The authors concluded that headstarting has greatly boosted the population. Because nest protection was happening at the same time, the counts alone cannot split the gain between the two efforts.

Does Headstarting Work Everywhere?

Not uniformly, and the wider evidence explains the caution.

A 2020 Wildlife Society Bulletin study looked at two long-running headstart programs in DuPage and Lake counties in northeastern Illinois. The programs collected eggs from wild females, raised the hatchlings and released them back into the same populations. One site received about 1,400 turtles over 21 years and the other about 800 over 11 years. Before the programs, both populations were dominated by large adults. Afterward, both included turtles of many sizes, from juveniles to adults. Headstarted turtles had begun reproducing in the 21-year program and were nearing adult size in the 11-year program.

A 2023 PLOS One study by Laurentian University, University of Toronto and Toronto Zoo researchers examined a tougher case. In Toronto’s Rouge National Urban Park, the Blanding’s turtle population had dwindled to five adults and one juvenile. From 2014 through 2020, 270 headstarted turtles were released there. Using trapping and radio tracking, the researchers estimated that about 89 percent of turtles released from 2015 through 2018 survived each year. The 2019 group fared far worse: an estimated 43 percent survived their first year. Their release coincided with a die-off in which predators killed more than 50 headstarted Blanding’s turtles and more than 50 adult female painted turtles over 2019 and 2020.

None of the Toronto turtles had reached breeding age, so the authors could not say whether they would form a self-sustaining population. They judged headstarting alone likely inadequate at that site. They pointed to the small wetland where the turtles live, surrounded by fragmented land with many roads and few links to other habitat. Elsewhere in the paper, they named predators such as raccoons and foxes, which thrive around people, as the suspected main cause of deaths.

What Does Ivy’s Family Actually Prove?

Something important, but narrower than recovery.

The release that opened this story was held June 25, 2026, by the Fish and Wildlife Service, MassWildlife and Zoo New England, exactly a year after Ivy began nesting. Students had already released Ivy’s other hatchlings after raising them in local classrooms.

The threats have not gone away. Beyond the road and habitat problems the Toronto team described, the Fish and Wildlife Service points to illegal collection and trade, which it says community involvement helps guard against.

Seven hatchlings cannot establish recovery. That requires turtles to keep reproducing in the wild while enough juveniles and adults survive. Ivy has completed that cycle once. Lasting recovery depends on it becoming a repeated pattern across generations.