Professor of Biology Ernest Williams will lead a walk through the Utica Marsh as part of the Utica Monday Nite Walks & Talks Series on Monday, June 16, beginning at 6:30 p.m. The walk is titled "Observing Nature at the Utica Marsh." Williams also gave a presentation on monarch butterfly migration at the Visitor Center of the Montezuma National Wildlife Refuge on June 15. His talk was part of its 5th annual Wildflowers and Wine Festival. Finally, on Thursday, June 19, he will speak to all the Clinton third grade classes about butterflies.