Polar bears are becoming a common sight near the village of Ryrkaypiy in northeastern Russia. As CNN reports, nearly 60 bears were spotted looking for food in the area, and experts say climate change is to blame.

Normally around this time of year, Arctic sea ice is thick enough for polar bears to use it as a platform for hunting seals. Temperatures have been warmer than average this year, and without the ice to support them, hungry polar bears are being pushed south into human-occupied territories on land.

According to a statement released by World Wildlife Fund Russia, the bears gathering in Ryrkaypiy are thin-looking and include cubs and adults of various ages. So far, they've been subsisting on walrus carcasses that have been lain on the village's shore since autumn.

No incidents between bears and villagers have been reported yet, but the 500 residents are on guard. Volunteers are now patrolling the town limits and school buses have started picking up children who would normally walk to class.

Prior to this decade, it was unusual to see more than three or five polar bears near Ryrkaypiy at a time. But as climate change drives global warming and melts Arctic sea ice, seeing large groups of polar bears at lower latitudes is no longer an anomaly. Earlier this year, Novaya Zemlya, Russia, declared a state of emergency after more than 50 bears invaded the region. As sea ice becomes more scarce, the circumstances forcing hungry polar bears to share space with people will only get worse.

[h/t CNN]