Massive Bee Colony Discovered Beneath New York Cemetery Grounds
In a remarkable ecological discovery, researchers have confirmed that more than five million bees are thriving beneath the surface of a quiet cemetery in upstate New York, creating one of the largest recorded bee colonies ever documented. The East Lawn Cemetery in Ithaca has been revealed as home to an estimated 5.5 to 5.6 million ground-nesting bees, establishing it as potentially both the largest and oldest known aggregation of its kind.
Accidental Discovery Leads to Groundbreaking Research
The finding originated almost by chance in 2022 when a Cornell University technician observed unusually high numbers of bees during a routine walk through the cemetery grounds. Intrigued by the sight, the technician collected samples and brought them back to the laboratory for analysis. This initial observation sparked a comprehensive study led by entomologist Bryan Danforth and his research team, who sought to determine the full extent of the underground bee population.
During several weeks in the spring of 2023, researchers deployed small emergence traps across the cemetery to capture bees as they surfaced from their underground nests. By measuring population density in specific areas and scaling their findings across approximately 6,000 to 6,500 square meters, the team calculated a population range of 3 million to 8 million bees, with an average estimate settling around 5.5 million individuals.
Understanding the Regular Mining Bee Species
The bees identified belong to the species Andrena regularis, commonly known as the regular mining bee. Unlike honeybees that form complex social colonies, these are solitary bees that nest independently in the ground. Each female bee excavates her own nest chamber, provisions it with pollen and nectar, and lays eggs individually. The species spends winter underground as adults before emerging in early spring, perfectly timing their activity with the blooming of plants such as apple trees.
"I was completely floored when we did the calculations," Danforth told Scientific American about the discovery. "I have seen published estimates of bee aggregations in the hundreds of thousands. But I never really imagined that it would be 5.56 million bees."
Historical Context and Comparative Findings
This discovery significantly surpasses previous records of ground-nesting bee populations. A 1990 study in Arizona documented approximately 1.6 million Centris caesalpiniae bees emerging from a 1,290-square-meter site. More recently, a 2024 study in upstate New York recorded roughly 651,440 Melissodes bimaculatus bees occupying a suburban lawn, while research in Brazil published in 2020 found about 13,500 Epicharis picta bees within a 160-square-meter area.
Ideal Habitat Conditions in Cemetery Grounds
Researchers attribute the massive bee population to the cemetery's exceptional environmental conditions. The undisturbed soil, minimal pesticide use, and rarely disrupted ground create near-perfect nesting conditions for ground-nesting bees. Additionally, the nearby Cornell Orchards and abundant flowering plants provide a steady, plentiful food supply throughout the active season.
Danforth explained to the Cornell Chronicle that these factors combine to make the cemetery an ideal haven for solitary bees. The research clearly demonstrates that cemeteries can serve as crucial habitats for ground-nesting bee species, offering important insights for conservation efforts.
Raising Awareness About Solitary Bees
"The solitary bees are totally underappreciated," Danforth emphasized in his interview with Scientific American. "I spend a lot of time trying to encourage people to appreciate the solitary bees, just because they do so much, and they're kind of under the radar. But they're fascinating creatures."
This discovery highlights the ecological importance of solitary bees, which represent approximately 70 percent of bee species in the United States. Unlike their more famous honeybee cousins, these ground-nesting bees typically operate independently but can form massive aggregations when conditions are favorable.
The research underscores how urban and semi-urban spaces like cemeteries can support significant biodiversity when managed with minimal disturbance. As bee populations face numerous threats worldwide, understanding and protecting such habitats becomes increasingly vital for ecosystem health and pollination services.
