WEDNESDAY, OCTOBER 16:

  • Rockland Tree Warden Leads Wednesday Walk, October 16, at 10:30 a.m. Walkers should meet at Rockland Public Library’s checkout desk to sign a waiver. Licensed arborist Richard Schneller will point out trees transitioning into winter dormancy.

THURSDAY, OCTOBER 17:

  • Birding Excursion to Green Point Wildlife Area in Dresden, meet at 8 a.m. in the parking lot at Hannaford in Damariscotta to carpool to the 432-acre wildlife area for a walk through mature orchards (often teeming with birds), past small ponds and wetlands, to a pine grove on a peninsula with an expansive view of Kennebec River. Outing details: Midcoast.MaineAudubon.org.
  • 20th Annual Tennis Tournament of Central Lincoln County YMCA, 525 Main Street, Damariscotta, from 9 a.m. to 2 p.m. Women’s doubles, an auction, food, prizes and more to raise funds for breast cancer research. $25 per person. Details: CLCymca.org.

FRIDAY, OCTOBER 18:

  • Hogback Mountain Hike in Montville, 2 to 5 p.m. Midcoast Conservancy offers the foliage hike of about five miles, with some steep inclines. Bring water, binoculars and a snack to eat at the summit. After the hike, people are welcome to meet at Lake St. George Brewing in Liberty for beer and pizza. Registration: landmcc@midcoastconservancy.org, 389-05163.

SATURDAY, OCTOBER 19:

  • Hills to Sea Trail Hike in Unity, offered by Belfast Bay Watershed Coalition. Hikers will meet at 10 a.m. by the trail sign at Crosby Brook Road on Maine Organic Farmers and Gardeners Association property, then carpool to Main Street in Unity for the 5.5-mile hike back to MOFGA. The hike includes a knee-deep wade across Sandy Stream. Bring water, lunch, and protection from rain and bugs. For more info: 338-1147.