On Saturday, March 26, the Historical Sites Commission has invited a naturalist from the Crabtree Nature Center in Barrington to give a presentation about the amazing uses of bird "tools" -- beaks, feet and feathers. This free event will be from 1 p.m. to 2:30 p.m. at the Sunderlage Farmhouse on the corner of Volid Drive and Vista Lane. Call 847-781-2606 for more information.