Peggy Hentz, Red Creek Wildlife Center, Schuylkill Haven, gives a presentationwith Hannibal, a turkey vulture, to students during the annual Schuylkill County Envirothon at the Schuylkill County Fairgrounds and Environmental Education Center in Summit Station, Tuesday. The Envirothon revolves around five environmental subject areas: aquatics, forestry, soils, wildlife and a current environmental issue and teams from different schools compete as they test their knowledge of the environment.