Trail culvert clearing, 1 p.m. today at the Great Pond Mountain Wildlands in Orland. Meet at the Wildlands South Gate (Route 1 just south of the Route 176 intersection). Help protect the gravel trails this winter. If you like playing with sticks, rocks, water and mud, this is the job for you. Please dress warmly, wear boots and work gloves and bring a shovel, hoe or rake and something to drink. Call 469-0231 or e-mail [email protected] for more information.


Backyard Bird Feeding Tips workshop 7 to 9 p.m. Wednesday at Gilsland Farm Audubon Center, Route 1, Falmouth. Staff naturalist Eric Hynes will guide participants through various feeders, fountains and seed, demonstrate how to turn your property into habitat, and help identify that little brown bird that shows up at your feeder every fall. $15 for Maine Audubon members; $25 for nonmembers. Call 781-2330 ext. 209 to register or for additional information.


The Stanton Bird Club, owner and manager of Thorncrag Nature Sanctuary, will host a geology walk on from 2-4 p.m. Nov. 14. Join Bates College professor of geology Michael Retelle for a walk to the top of Thorncrag and adjacent areas to see the rock formations and glacial geology of this unique local feature. The event is free and open to the public. For more information, visit or call 784-8307.


Looking ahead

Birds in the Chimney? 7 p.m. Nov. 16. A “flying cigar,” the chimney swift is rarely seen perched. The swift’s high-pitched twittering, once a familiar sound during summertime, is now becoming scarce. Ted Allen, a leader in swift conservation, will talk about this unique species and what is being done for its conservation. Mather Auditorium of the Wells Reserve at Laudholm Farm, 342 Laudholm Farm Road, Wells. Free. www.york


Naturalists’ Forum: Maine’s Rivers and Relics, 7 to 9 p.m. Nov. 17 at Gilsland Farm Audubon Center, Route One, Falmouth. Landis Hudson of Maine Rivers will host a screening of the film, “Maine’s Rivers and Relics.” Free. Call 781-2330, ext. 209 to register or for additional information.


Maine Guide Training Program at the Skowhegan Community Center, 39 Poulin Drive, Skowhegan, Dec. 2-5. The course prepares students for taking the state’s licensing exam for recreational, hunting and fishing guides. The cost is $475 per person, and a $200 deposit is required upon registration. To register, call Carroll Ware at Fins and Furs Adventures, 474-5430.

Wetland Species ID in Winter, 9 a.m.-1 p.m. Dec. 3, Coastal Maine Botanical Gardens, Boothbay Harbor. Instructor Lauren Stockwell builds knowledge and skills for recognizing wetland trees and shrubs in winter. Some familiarity with common wetland plants and taxonomy is helpful. Co-sponsored by New England Wild Flower Society and Coastal Maine Botanical Gardens. $44 (member) / $55 (nonmember). Pre-registration is necessary. Call 508-877-7630, ext. 3303.


The Portland Water District invites preschoolers to join it for environmentally themed stories, activities and crafts. The sessions include: Harvesting at Home, Nov. 19; Forest Friends, Dec. 17; the Wonders of Water, Jan. 21; Incredible Insects, Feb. 18; Plants and Their Parts, March 18; Fun with Frogs, April 15. The programs will run from 10 a.m.-noon at the Sebago Lake Ecology Center in Standish. Register now and pay $10 for the series. To register, e-mail [email protected] or call 774-5961 ext. 3319 or 3320. Donation supports local loon preservation. Scholarships available, snacks provided.

Weekly Bird Walk, Thursday mornings at Gilsland Farm, off Route One, Falmouth, 7 a.m., $5 for Maine Audubon members, $8 for nonmembers. All skill levels. Bring binoculars and a field guide and meet in the visitor center parking lot. 781-2330, ext. 209.

Bird Walks, 10 a.m. Thursdays, starting at the George B. Dorr Museum of Natural History, College of the Atlantic, Bar Harbor. With naturalist and student Anna Stunkel, through Nov. 18. For more information, contact [email protected] or call 288-5395.