Skinner State Park: Free programs at the park, off Rte. 47, Hadley: FRIDAYS: 9:30 a.m., Geology Hike; 3 p.m. Trepidation on the Tramway. SATURDAYS and SUNDAYS; 11 a.m., 2 p.m., 4 p.m., Summit House History. THURSDAYS: 8 a.m., Springtime Birding Walk. 586-0350

Mount Holyoke Range State Park: Free programs at the park, Rte 116, Amherst: FRIDAYS: 9:30 a.m., Kidleidoscope; 2 p.m. Wild Woods Walk. SATURDAYS: 9:30 a.m., Rocks to Roots Hike; 3 p.m., Speaking with Skulls. SUNDAYS; 10 a.m., Owl Detectives; 2 p.m., Wild Woods Walk. MONDAYS: What’s Wild? (ages 3-10). THURSDAYS: 9:30 a.m., Changing Landscapes Hike; 3 p.m., Speaking with Skulls. 253-2883  

Deerfield Dirt Road Randonnee (D2R2): SATURDAY, Aug. 20. Annual bike ride on dirt roads through Franklin County to benefit the Franklin Land Trust. 180K to 100K routes plus 40-mile Green River Tour and 20-mile family ride. franklinlandtrust.org  

Emily Dickinson Museum “Morning in Our Garden”: SATURDAY, Aug. 20, 9 a.m. Volunteers welcome to help weed and cultivate the garden beds. Emily Dickinson Museum, Main St., Amherst. emilydickinsonmuseum.org. 

Fitzgerald Lake Invasive Plant Removal: SATURDAY, Aug. 20, 10 a.m. -1 p.m. Broad Brook Coalition sponsors removal of water chestnut. Canoes and kayaks needed. Fitzgerald Lake, North Farms Road entrance, Northampton. 584-4176, bhart2000@aol.com. 

Mt. Tom State Reservation: , SATURDAY, SATURDAY, Aug. 20: 10:30 a.m., Life Around the Lake; 1 p.m., Hike the D.O.C. Trail. SUNDAY, SUNDAY, Aug. 21: 10:30 a.m., Birding for Beginners; 1 p.m., Family Program: Eyrie The Web of Life. MONDAY, MONDAY, Aug. 22: 10 a.m., Moms Fitness Hike; 1 p.m. Senior Hike. TUESDAY, TUESDAY, Aug. 23: 10:30 a.m., Nature Kids/Junior Rangers (ages 10-14); 1 p.m., Advanced Hike for Seniors; 2:30 p.m., Expliiorers’ Club (ages 10-14). 527-4805.

Big Trees and Stories of the Land: SUNDAY, Aug. 21, 10 a.m. Hike on the Rivulet Trail with Bob Leverett. $10. William Cullen Bryant Homestead, Cummington. westregion@thetrustees.org. 

Bricks and Mortar: The Beauty of Old Mills: SUNDAY, Aug. 21, 10 a.m. – 12 p.m. 1.8 mile walking tour focused on textile and paper mill design. Free. Holyoke Heritate State Park Visitor’s Center, 221 Appleton Street, Holyoke. 413-534-1723. holyoke.heritage@state.ma.us. 

Wild Food Walk: SUNDAY, Aug. 21, 1 p.m. Wild edibles walk with Aidan Hawkowl. Free. Wildwood Elementary School, 71 Strong St, Amherst.  mhawkowl@yahoo.com. 

Bike to Brookfield: A Fundraiser for the Rail Trail: SUNDAY, Aug. 21, 3 p.m. – 7 p.m. Bike to the farm by our own route or go to Facebook (“bike to Brookfield”) to meet up with others. Music by the No No’s, food available, BYOB. Donation to benefit Friends of Northampton Trails & Greenway. Brookfield Farm, 24 Hulst Rd., Amherst. 

Northampton Cross-Country Races: TUESDAY, Aug. 23, 6:30 p.m. 5K runs on dirt roads and trails. $5 entry fee; under 12 free. Northampton Community Gardens,, Burt’s Pit rd., Northampton. sugarloafmac.org.

Night Insect Sounds: TUESDAY, Aug. 23, 7 p.m. Indoor/outdoor program. Registration required. $8. Arcadia Wildlife Sanctuary, Easthampton. 584-3009, massaudubon.org. 

Beginners Urban Birding: THURSDAY, Aug. 25, 9 a.m. – 10 a.m. Walk through the park to identify, and learn about birds that make the park and Holyoke their home. Free. Holyoke Heritage State Park Visitor’s Center, 221 Appleton Street, Holyoke. 413-534-1723. holyoke.heritage@state.ma.us. 

Evening Walk at Quabbin Reservoir: THURSDAY, Aug. 25, 5 p.m. Arcadia Wildlife Sanctuary sponsors two-hour walk. Registration required. $10. Quabbin Reservoir, Belchertown. 584-3009, massaudubon.org. 

Nighthawks and Chimney Swifts: Aug. 26, 5 p.m. Indoor/outdoor program. Arcadia Wildlife Sanctuary, Easthampton. 584-3009, massaudubon.org to register. 

“Ready All Row!”: Rowing4Rowers Girl Scout Gold Award Project: Aug. 27, 8 a.m. – 2 p.m. Scull or paddle 25 miles from Sunderland to Jones Ferry, Holyoke to raise awareness of adaptive rowing. Sponsored by GS Troop 20168. Rowing4Rowers@gmail.com. 

Whispers in the Night: Attracting and Identifying Moths: Aug. 30, 10 p.m. – 12 a.m. Betsy Higgins demonstrates how to attract and identify moths at late-night event.  Free. Holyoke Heritage State Park Visitor’s Center, 221 Appleton Street, Holyoke. 413-534-1723. holyoke.heritage@state.ma.us. 

Guided Mushroom Foray: Sept. 3, 10 a.m. – 12 p.m. Guided foray introducing gourmet and medicinal wild mushrooms of summer. $25. Specific location in Montague TBA to registered attendees.  413-687-2194. info@themushroomforager.com. 

Ferns at Arcadia:  Sept. 10, 10 a.m. – 12 p.m. Preregistration required. $12.  Arcadia Wildlife Sanctuary, Easthampton.  584-3009. 

HCC Foundation Golf Classic: Sept. 12, 12:30 p.m. Holyoke Community College hosts benefit tournament. $185 includes buffet lunch, dinner, auction. Springfield Country Club, West Springfield. hcc.edu/golf.