Tent caterpillars have overrun several Alberta campgrounds, including Pigeon Lake Provincial Park, during the weekend of June 13-14, 2026 [1, 2].
The surge creates significant disruptions for outdoor recreation and park management during the peak summer camping season. Visitors are encountering unusually high concentrations of the insects across various sites, which can affect the accessibility and comfort of the provincial parks [1, 2].
Reports indicate that the infestation is particularly concentrated at Pigeon Lake Provincial Park, located southwest of Edmonton [1, 2]. Campers have encountered large numbers of the larvae as they move through the area. These insects are known for creating web-like tents in trees, but the current volume has led to them appearing in high numbers on the ground and around campsite infrastructure [1, 2].
Biologists said the phenomenon is due to a cyclical population boom [2]. Such surges occur when environmental conditions align to allow larval populations to expand rapidly. This natural cycle often results in a sudden, overwhelming presence of caterpillars before the population eventually stabilizes or crashes [2].
Park officials and visitors are monitoring the situation as the insects continue their seasonal movement. While the insects are part of the local ecosystem, the scale of this particular surge has made the experience notable for those visiting the region this weekend [1, 2].
“Tent caterpillars have overrun several Alberta campgrounds”
This event highlights the impact of natural biological cycles on regional tourism and land management. While the population surge is a recurring ecological event, the timing during a high-traffic weekend at a popular provincial park increases the likelihood of human-wildlife conflict and may prompt parks to implement temporary mitigation strategies to maintain visitor access.
