TUESDAY

Gray Ghost Fly Tiers

6:30 to 8:30 p.m., Yarmouth

Come learn how to tie flies. Cost is $10 for materials and lessons by pro tier Don Bastian. Meet at the First Parish Church in Yarmouth at 116 Main St. All welcome. Call 749-1593.

WEDNESDAY

Seth Wescott Day

5 p.m. in Camden

The Camden Snow Bowl is honoring the two-time Olympic gold medalist at two gatherings, and he is helping the community-owned ski area raise funds for a redevelopment. A reception with Wescott will be held at the Waterfront Restaurant from 5 to 6:30 p.m. Tickets cost $20 and can be purchased by calling 975-9819. Wescott also will give a slide presentation about his adventure in Antarctica from 7 to 8:30 p.m. at the Camden Opera House. Tickets are $5 and are available at HAV II in Camden, and Snowenjava in Rockland. Call 701-7669 or 236-6777.

THURSDAY

Hawk Watch

all day in Pownal

Freeport Wild Bird Supply once again partners with Nikon Sport Optics to sponsor a spring hawk watch at Bradbury Mountain State Park. The watch will be held from 9 a.m. to 5 p.m. daily until May 15. To learn more, call 865-6000 or go to www.freeportwildbirdsupply.com.

FRIDAY

Maine Boatbuilders Show

10 a.m. to 6 p.m. in Portland

The show, in its 25th year, will be held at the Portland Company Marine Complex at 58 Fore St. It continues from 10 a.m. to 6 p.m. Sat- urday and 10 a.m. to 4 p.m. Sunday. Tickets are $15 per day. For more, go to www.portlandcompany.com/boatshow.

SATURDAY

Sap Shack Celebration

2 p.m. in Union

The Georges River Land Trust is hosting a tour of Froggy’s Sap Shack, where Jim “Froggy” Freyenhagen has been producing maple syrup for more than 30 years. Tickets are $25, or $40 for families, and support conservation, education and recreation. They may be purchased at www.grlt.org/revelry or by calling 594-5166.

Bird Walks

8 a.m. in Freeport

Free guided walks are offered every Saturday for birders of all skill levels. Meet at Freeport Wild Bird Supply, 541 Route 1. For more information, call 865-6000.