THURSDAY

Lanes Island Tour, 10 a.m. in South Freeport

Maine Coast Heritage Trust, the Maine Island Trail Association and a collection of conservation groups are leading a tour of Lanes Island and a lesson in best practices for island camping. Lanes Island, off Yarmouth, was donated to Maine Coast Heritage Trust by Lisa and Leon Gorman, and offers overnight camping less than a half-mile from Winslow Park in South Freeport. Bring your own kayak and life jacket, and paddle out to share a breakfast and learn how to island camp from a Register Maine Guide. The group will depart from Winslow Park at 130 Staples Point Road in South Freeport.

SATURDAY

Hiking Challenge, June 4-5 in Harpswell

The town of Harpswell and the Harps-well Heritage Land Trust will offer a hiking challenge on National Trails Day. The seventh annual Harpswell Hiking Challenge offers eight coastal walks that total 10 miles of trails. Register online or the morning of June 4 at the Harpswell Town Office at 263 Mountain Road. To learn more, call 833-5771 ext. 108, or email [email protected]

Sparrow Search, 7 a.m. in Prospect

The Penobscot Valley chapter of Maine Audubon will hold a bird walk in search of sparrows through Prospect and Frankfort. Meet at the public parking lot in downtown Winterport, next to the antique store, at 7 a.m. No cost, all welcome. To register, call 989-2591.

Wildflower Walk, 10 a.m. in Bangor

The Bangor Land Trust is leading a second walk in its wildflower series. Meet at the Walden Park Preserve in Bangor. For more info, write to [email protected] or go to bangorlandtrust.org.

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