Braelei Hardt
Assistant Naturalist
David Mizejewski
Head Naturalist
Join the Federation’s own naturalists Braelei Hardt and David Mizejewski as we explore the unexpected impacts of climate change on winter across the continental United States. From declining snowpack in the West — now down approximately 23% since 1955 — to the extension of fire seasons and altered wildlife behaviors, climate change is reshaping our winters in profound ways. For example, animals like snowshoe hares can face increased predation due to mismatched camouflage compared to their surroundings as snow disappears, while ʹappƽ̨n black bears are changing their hibernation routines or even staying awake all winter. These shifts are affecting ecosystems and creating new challenges for conservation and coexistence.
Recorded February 12, 2025.
Braelei Hardt is the Assistant Naturalist at the National Wildlife Federation, where they specialize in creating engaging wildlife conservation content and ensuring the scientific accuracy and accessibility of educational materials distributed nationwide.
Braelei holds a Master’s degree in Evolutionary Ecology from the University of Northern Colorado and an Honor’s Bachelor’s degree in Wildlife Sciences from Oregon State University. Their expertise spans biological research, statistical analysis, environmental education, and diverse fieldwork. They have published groundbreaking research on the evolution of acoustic communication and stress behavior in animals.
A passionate educator and advocate for diversity in science, Braelei has developed and led workshops to foster inclusivity and engagement in conservation efforts. They believe in storytelling as a powerful learning tool and enjoy exploring innovative forms of education, including conservation-focused game design.
Braelei is committed to inspiring people, especially younger generations, to connect with nature and act for wildlife conservation. They have led several student ecology trips in Alaska, Colorado, and Iceland focused on climate, science communication, and carbon capture technology.
David Mizejewski is the Federation’s Head Naturalist and ambassador. He’s a science communicator, TV host, author, and content creator who has appeared in the media for over two decades interpreting the natural world and inspiring people to connect with nature and get involved in wildlife conservation.
David has hosted television series on both Animal Planet and NatGeo WILD and has appeared on NBC’s Today Show, ABC’s Good Morning ʹappƽ̨, NPR’s All Things Considered, CNN, The Martha Stewart Show, Conan, The Wendy Williams Show, Access Hollywood, The Weather Channel, and Mutual of Omaha’s Wild Kingdom among many others. He has been quoted in The New York Times, The Washington Post, and USA Today and been a guest on countless radio programs and podcasts. He is the author of the book Attracting Birds, Butterflies, and Other Backyard Wildlife>, which shows people how to foster habitat in their own neighborhoods.
He holds a degree in Human and Natural Ecology from Emory University and sits on the advisory council for the Emerging Wildlife Conservation Leaders initiative. David is dedicated to using his knowledge and unbridled enthusiasm to help others understand and protect wildlife.
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