Christa Hayes

Growing up in several countries gave Christa an early appreciation for both the natural world and the diversity of cultures and landscapes. That perspective continues to shape her work as a naturalist, expedition guide and educator. She leads wildlife, geology and natural history tours in the Greater Yellowstone Ecosystem, where she emphasizes ethical wildlife viewing, ecosystem dynamics and science-based interpretation. Her interests include species interactions, predator-prey relationships and the connections between landscapes, wildlife and climate.

Christa is the co-founder and former executive director of Peak Academy, an expeditionary learning school where she designed and led wilderness and international expeditions for students and families. She also brings nearly two decades of academic experience, supported by a PhD in Applied Mathematics. Her work in ecological modeling, population dynamics and biological systems provides a scientific foundation for helping guests better understand the natural processes they observe in the field.

During the winter, Christa works as an alpine ski instructor in Big Sky, where she combines mountain awareness, movement and risk management to help guests build confidence in changing conditions. Whether leading a hike or guiding on snow, she enjoys helping people recognize the connections between landscapes, wildlife and the ecological systems that shape them. Her goal is to make complex scientific concepts approachable through thoughtful interpretation and shared experiences in nature.