England’s Rarest Ant Nest Stolen From Devon Nature Reserve: Up to 5,000 Ants Taken
A nest holding up to 5,000 of England’s rarest ants has been dug up and stolen from a nature reserve in south Devon. Devon Wildlife Trust said the narrow-headed ant nest was removed without permission from Chudleigh Knighton Heath, the last place in England where the species still survives. The theft was reported to Devon and Cornwall Police, who are appealing for information.
The discovery was made in mid-October 2026, when conservation researchers carrying out routine checks found a hollow where a known nest had stood. The surrounding ground showed clear signs of digging with a spade. Devon Wildlife Trust said the loss was the first time it had experienced an ant nest being taken from one of its reserves.
England’s Rarest Ant Nest Stolen Devon — Quick Reference Summary
| Detail | Confirmed position |
|---|---|
| Species | Narrow-headed ant (Formica exsecta) |
| Location | Chudleigh Knighton Heath nature reserve, south Devon |
| What was taken | One established nest, holding a colony of 1,000 to 5,000 ants |
| When discovered | Mid-October 2026, during routine conservation checks |
| Signs left behind | A hollow where the nest had been, with clear signs of digging with a spade |
| Remaining nests at the reserve | 142 active nests recorded in the latest survey |
| Legal protection | Site of Special Scientific Interest; species listed as Nationally Rare and Near Threatened |
| Police action | Reported to Devon and Cornwall Police; public appeal for information, crime reference 50260284768 |
| Motive | Not publicly confirmed |
A Hollow Where a Colony Should Have Been
Researchers checking known nest sites found an empty hollow instead of a living colony. The ground around it had been disturbed with a spade, showing that the nest had been deliberately dug out rather than lost to weather or wildlife. Devon Wildlife Trust said whoever took the nest would have needed prior knowledge of ant colonies to locate it.
Steve Hussey, from Devon Wildlife Trust, said the charity was unsure why anyone would take a narrow-headed ant nest from the reserve. He described it as the first time the trust had experienced the loss of an ant nest. The trust has dealt with thefts of bird eggs and fungi in the past, but never before a targeted ant theft.
Why One Missing Nest Matters So Much
A single narrow-headed ant nest can hold between 1,000 and 5,000 ants, along with one or more breeding queens that can live for up to 25 years. Losing one colony therefore removes far more than a handful of insects. It removes decades of breeding potential from a population that has almost nowhere left to go.
The reserve’s latest survey recorded 142 active nests, so one nest represents a small share of the total count but a real setback for recovery work. Julia Balfour, Devon Wildlife Trust’s species recovery officer for narrow-headed ants, said the removal was a significant loss for the species. She added that losing even one colony sets back years of careful work by staff, volunteers and partners.
Narrow-headed ants are named for the distinctive pinched look of their heads. They were once widespread across heathlands in southern England, but their numbers have fallen over the past 100 years as heathland homes were lost to building development and agricultural change. Today the Devon reserve holds the last population in England, with only a handful of sites remaining in Scotland, including on the Balmoral Estate.
The Legal Protection Around the Heath
Chudleigh Knighton Heath is a Site of Special Scientific Interest, a designation that gives the land legal protection because of its rare wildlife and habitat. Narrow-headed ants are also a Section 41 species, nationally rare, and listed as Near Threatened on the International Union for Conservation of Nature’s Red List. Deliberately disturbing or removing material from the reserve breaks the law, and Devon Wildlife Trust said it is taking the theft very seriously.
PC Lucy Wyatt, from Devon and Cornwall Police’s rural affairs team, said damaging or disturbing legally protected sites could constitute a criminal offence. Police have urged anyone with information about suspicious activity at the reserve to contact them on 101, quoting crime reference 50260284768. The same appeal appears in reporting of the Devon nest theft, which also records the trust’s witness appeal.
Conservation work at the reserve continues through a collaboration between Devon Wildlife Trust and Buglife’s work on the ants’ last English stronghold, which began in the summer with support from the UK Government’s Wild Again initiative. That partnership focuses on monitoring and restoring the heathland the ants depend on. The theft has now become part of that story, as a reminder of how exposed even a protected site can be.
What Happens Next in the Police Appeal
No motive for the theft has been publicly confirmed. Suggestions reported in coverage include insect collectors or so-called rogue rewilders, but those remain speculation rather than established findings. Police have not announced any arrest connected to the theft.
The trust is asking anyone who saw digging or unusual activity at Chudleigh Knighton Heath in October to come forward. For readers following other UK stories this week, the case sits alongside very different headlines, from the King Charles Antigua rain moment to the UK-EU draft deal on food exports, yet it has drawn wide attention precisely because the crime is so unusual. A stolen ant nest sounds small until the numbers behind it are set out: one colony, thousands of ants, and the last English home of a rare species.
Whether the colony can be recovered is not publicly known. What is known is that the remaining 141-plus nests at the reserve now carry the full weight of the species’ English future, and that conservation teams will be watching them more closely than ever.
Frequently Asked Questions About the Stolen Devon Ant Nest
How many ants were in the stolen nest?
A single narrow-headed ant nest can hold between 1,000 and 5,000 ants, along with one or more breeding queens that can live for up to 25 years.
Where was the nest stolen from?
Chudleigh Knighton Heath nature reserve in south Devon, managed by Devon Wildlife Trust and designated a Site of Special Scientific Interest.
When was the theft discovered?
In mid-October 2026, during routine conservation checks, when researchers found a hollow where a known nest had been, with clear signs of digging with a spade.
Are narrow-headed ants found anywhere else in England?
No. The Devon reserve holds the last population in England. A small number of colonies still exist in Scotland, including on the Balmoral Estate.
Has anyone been charged over the theft?
No arrest or charge has been publicly announced. Devon and Cornwall Police are appealing for information on 101, quoting crime reference 50260284768.
Why are the ants so rare?
Their heathland habitat has been lost over the past century to building development and agricultural change. They are listed as nationally rare and Near Threatened on the IUCN Red List.
