Did you know... Birds don't have teeth. They are the only class of vertebrates without teeth. Instead, they have a gizzard that grinds food, located between their crop and intestine. Some birds swallow clams and mussels whole and their gizzard grinds the shells into digestible material.

Mack Frantz is the Wildlife Diversity/Natural Heritage Zoologist at the West Virginia Division of Natural Resources (WVDNR). He conducts research and conservation assessments on rare and data deficient non-game small mammals (e.g. Allegheny Woodrat) and aquatic invertebrates (e.g. Greenbrier River Crayfish). Mack serves as the project coordinator for the WVDNR Motus Initiative, currently 28 state-wide stations that detect migration and long dispersal movement of birds, bats, and insects. He previously oversaw the state's firefly program, developing the state's first comprehensive species list. Prior to employment at the WVDNR, Mack conducted songbird research, authoring or co-authoring ten scientific articles on Golden-winged Warblers and Louisiana Waterthrush. When not working in the stream or woods, Mack's two kids pull him back into the stream or woods for play.