Cornelia "Conni" Holzer is a warden and ranger at the Hirschfelden Hunting Reserve. Born in Maine, USA, she majored in Biology at Stanford University and field studies for her doctorate took her all around the world, studying different biomes and biotopes. During a visit to the Layton Lake District reserve, she met Doc for the first time and they became friends.

After a few years of traveling the globe, she eventually found love in Europe and decided to settle down. Having studied and loved nature all her life, she received a Wildhüter (game warden) degree and eventually moved with her life partner to Hirschfelden, where she was offered a job as a reserve warden.

Conni is very friendly, knowledgeable and professional, which makes visitors return every year to explore the reserve's beauty under its warden's oversight.