Finnish viper protection has not increased snake numbers, expert says

Three years after the Finnish viper was granted legal protection in Finland, claims of rising snake populations are unfounded, according to a leading expert.

The viper, Finland’s only venomous snake, was placed under protection in June 2023, making it illegal to kill except in emergencies. But Toni Beckman, a specialist in viper management, told Yle that the measure has had no measurable impact on national population levels.

“At most, it may have affected isolated local populations,” Beckman said. His work includes relocating snakes from schools, gardens, and other human-inhabited areas.

Natural reproduction cycles make any rapid increase impossible, he explained. Vipers take three to four years to reach sexual maturity, and mortality rates among first- and second-year juveniles are high. “Few individuals ever survive to breed, which means population changes happen very slowly. Protection simply cannot boost numbers through reproduction in any meaningful timeframe.”

Reports of more viper sightings likely stem from increased outdoor activity, seasonal heatwaves coinciding with holidays, and the spread of social media content. “Algorithms create feedback loops—once you engage with a viper post, you’ll see more,” Beckman noted. “That doesn’t mean there are more snakes.”

He acknowledged receiving criticism from both sides: those who believe vipers are overprotected and those who think the snakes are everywhere. “I get flak from all directions,” he said.

In one recent case, Beckman was called to remove vipers from the grounds of Monni School in Hausjärvi after students and staff reported multiple sightings. Such interventions, he stressed, follow conservation principles—relocating snakes rather than culling them.