Myths About Bats, 7 p.m. Sept. 20 in Wells

There are more than 1,300 known species of bats, comprising nearly a quarter of all mammal species. These unique creatures are at the center of some of today’s most pressing ecological issues. David Yates, the mammal program director at the Biodiversity Research Institute in Portland, will share some of the research he has done on bats at the Wells Reserve at Laudholm. The event is sponsored by York County Audubon. All welcome, no cost.

Ragged Mountain Scuttle, 10 a.m. Sept. 18 in Camden

The third annual Ragged Mountain Scuttle, presented by Pen Bay Medical Center and Waldo County General Hospital, will take place at Camden Snow Bowl. The 3.1-mile obstacle challenge features 20 obstacles on a cross-country course. It’s a fundraiser for the Camden Snow Bowl and Go! Malawi, which supports education, health and the well-being of orphans in Malawi. Individuals or teams can compete. Early-bird registration is $45 through Aug. 31, then the cost is $55, or $65 the day of the event. Students up to age 18 pay $30. To learn more, write to [email protected] or [email protected]

Appalachian Trail Workday, all day Sept. 18 in Caratunk

The Maine Appalachian Trail Club is looking for volunteers to help on a trail work day. The MATC manages and maintains the 267 miles of the Appalachian Trail in Maine. Founded in 1935, MATC is an all-volunteer, donor-supported nonprofit. Volunteers are needed to help bring materials to the trail for the upcoming installation at Pleasant Pond campsite near Caratunk on Sept. 17. Contact [email protected], or go to matc.org for more information.

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