Wild Auction

The board of directors of the Battle Creek Nature Education Society is holding a Wild Auction at which artwork, jewelry and fine crafts will be sold to raise funds for environmental education programs in Calvert County. A preview with food and drinks will be held at 7 p.m., and the auction begins at 8 p.m. Saturday at Battle Creek Cypress Swamp, 2880 Grays Rd., Prince Frederick. Free. To reserve, call 410-535-5327.

Feedback for Writers

Writers of all levels of experience looking for feedback about their work are encouraged to attend the St. Mary's County Writers Group, which meets 7-9 p.m. the first Wednesday of each month at the Lexington Park library, 21677 FDR Blvd., Lexington Park. Free. 301-737-7818.

Protecting the River

The first St. Mary's River Fest has been organized to teach area residents about how to improve, protect and promote the well-being of the river. Sponsored by the St. Mary's River Watershed Association. Activities will include pumpkin painting, tonging for oysters, nature walks, bird-watching and rides on the Dee of St. Mary's skipjack. From noon to 4 p.m. Saturday at the Chesapeake Bay Field Lab, 16129 Piney Point Rd., Piney Point. The rain date is Sunday. Free. 301-994-2245.

Prince Frederick's Battle Creek Cyprus Swamp, site of the Wild Auction, offers an interactive look at the wildlife and cultural history of the area.