[4] Mizejewski is a graduate and board member of Emerging Wildlife Conservation Leaders (EWCL), an exclusive, two-year leadership training, networking, and mentoring program.

Mizejewski has also sat on advisory groups for the North American Pollinator Protection Campaign, Biodiversity Council, Alliance for Workplace Excellence, OurEarth.org, and Mother Earth News magazine.

He also hosted and produced Animal Planet's Backyard Habitat, is a regular guest on NBC's Today Show,[5] Conan,[6] and ABC's Good Morning America.

In addition to his television appearances, Mizejewski has worked as a wildlife consultant on motion picture productions such as Where the Wild Things Are and Legend of the Guardians.

Mizejewski is the author of Attracting Birds, Butterflies and Other Backyard Wildlife,[7] which won the 2005 Independent Book Publishers Association Benjamin Franklin Award for Gardening/Architecture.