Earth Day events, Panel discussion: Restoring Wild in Urban and Suburban Areas, April 26, 7:30 p.m.; Earth Day-focused programs, nature walks, April 27, 10 a.m.-6 p.m., Grace Farms Foundation, 365 Lukes Wood Rd., New Canaan. Advance registration suggested. Info: gracefarms.org/calendar.

McKinley School Carnival, April 26, 6-10 p.m., April 27, 1-10 p.m., and April  28, 1-5 p.m., Jennings Beach parking lot, 880 S Benson Rd., Fairfield.

Earth Day Celebration, April 27, 10 a.m.-12:30 p.m., Greenwich Land Trust, 370 Round Hill Rd., Greenwich. Info: gltrust.org. RSVP: sophie@gltrust.org.

Spring tag sale benefit for animals, April 27, 9 a.m.-4 p.m., 1473 Nichols Ave., Stratford. All proceeds benefit The Stratford Cat Project. Rain date: May 11. Info: scp4cats@yahoo.com.

Earth Day Celebration, April 27, 10 a.m.-3 p.m., Ansonia Nature Center, 10 Deerfield Rd., Ansonia. Hikes, live animals, music, environmental exhibitors, interactive activities with Nature Center staff. Food and snacks available from local vendors. All ages. Registration: 203-736-1053. Info: AnsoniaNatureCenter.org.

Gigantic Book Sale, April 27-30, Wilton Library, 137 Old Ridgefield Rd., Wilton. Early buyers: $15, April 27, 7-9 a.m., free 9 a.m.-5 p.m.; April 28, 1-5 p.m.; April 29, 10 a.m.-5 p.m. (books half price); April 30, 10 a.m.-5 p.m. ($5 bag day). Proceeds benefit the library. Info: wiltonlibrary.org, 203-762-6334.

Norwalk City Hunt, April 27, 10:30 a.m.-3 p.m., meet at O’Neill’s Irish Pub, 93 N Main St, Norwalk. Interactive afternoon of clues and challenges throughout the Wall Street and SoNo neighborhoods of Norwalk. Tickets: $40-$140. Info: norwalknow.org.

Spring Book Sale, May 4-7, Norwalk Public Library, 1 Belden Ave., Norwalk. Special sale devoted to children’s books, May 2. All proceeds benefit the Norwalk Public Library System. Most books are $2 or less. Info: norwalkpl.org.

Ridgefield Gone Country BBQ Festival, May 4, 11 a.m. through May 5, 5 p.m., St. Stephen’s Episcopal Church, 351 Main St., Ridgefield. CT State BBQ Championship. Proceeds go to the Juvenile Diabetes Research Foundation and other charities via the Rotary grant process. Info: ridgefieldrotary.org.

Free Comic Book Day, May 4, 10 a.m.-4 p.m., Wilton Library, 137 Old Ridgefield Rd., Wilton. Pick up comics at no charge while supplies last. No registration required. Info: wiltonlibrary.org.

Spring forage walk, May 4, 10-11:30 a.m., CT Audubon Society’s Center at Fairfield, 2325 Burr St., Fairfield. Learn about common introduced and native plants, how to identify them by family, and their edible, medicinal, or poisonous properties. Cost: $40-$55. Advance registration required: ctaudubon.org/fairfield-programs-events/.

Pancake Breakfast and Sheep Shearing, May 4, 11 a.m.-12:30 p.m., Ambler Farm, 257 Hurlbutt St., Wilton. All ages. Cost: $5-$15. Register: 72118.blackbaudhosting.com/72118/Pancake-Breakfast.

Draft Derby, May 4, 1-4:30 p.m., Wall Street Theater, 71 Wall St., Norwalk. Tickets $10-$40. 20 breweries, food trucks. VIP entry at noon. Info: wallstreettheater.com.

Destination Westport: Stroll through Saugatuck, May 4, 3-4 p.m., meet at the Saugatuck Railroad Station, New York-bound side, 1 Railroad Pl., Westport. Advance registration: $8-$12. Day of: $10-$15. Info: westporthistory.org.

Pequot Derby Day Fundraiser, May 4, 4-9 p.m., Pequot Library, 720 Pequot Ave., Southport. Watch the Kentucky Derby on the big screen, tailgate, silent auction, food, drinks. Tickets: $50-$400, PQTderby19.givesmart.com. Ticket prices increase after April 26.

Girl Scout Badge Day, May 11, Brownies: Sense-ational Long Island Sound, 10:30 a.m.-noon; Juniors: Animal Habitats of Long Island Sound, 1-3 p.m., Coastal Center at Milford Point, 1 Milford Point Rd., Milford. Fee: $14/girl; $2/adult. Advance registration required: gsofct.org.

Migration Madness: Full Moon Walk, May 17, 7 p.m., CT Audubon Society’s Center at Fairfield, 2325 Burr St., Fairfield. Ages 8 and up explore the sanctuary in search of nocturnal animals; includes visit with resident owl. Cost: $7-$10. Advance registration required: ctaudubon.org/fairfield-programs-events/.

Migration Madness: Intro to Backyard Birding Workshop, May 18, 10:30-noon, CT Audubon Society’s Center at Fairfield, 2325 Burr St., Fairfield. Learn how to identify backyard birds by sight and sound; walk follows. Cost: $10-$15. Advance registration required.

Bruce Museum’s 34th annual Outdoor Crafts Festival, May 18, 10 a.m.-5 p.m., Bruce Museum, 1 Museum Dr., Greenwich. More than 70 artisans, crafts, juried exhibitors, live music, food. Admission: $10; members and under 5 free. Info: brucemuseum.org.

Flea Market, May 19, 8 a.m.-3 p.m., Fairfield Warde High School parking lot, 755 Melville Ave., Fairfield. Vendor spots: $25, fwhsfleamarket@gmail.com.

Migration Madness: Nature Photography Fun, May 19, 2 p.m., CT Audubon Society’s Center at Fairfield, 2325 Burr St., Fairfield. Join avid wildlife photographers Brian Bennett, and Rich Stone for a bird walk with a focus on photography. Cost: $15-$20. Advance registration required.

Fairfield County 5k: Corporate Funrun, May 23, 5 p.m., Sherwood Island State Park, Sherwood Island Connector, Westport. Proceeds benefit The Child Guidance Center of Mid-Fairfield County. Registration fee: $40. Online registration deadline, May 17, 5 p.m. Info:  corporatefunrun.com.

Memorial Day Picnic, May 27, noon-3 p.m., Fairfield Museum and History Center, 370 Beach Rd., Fairfield. Follows Town Parade. Food, games, crafts, and activities. Info: fairfieldhistory.org.

PHENOMENON: Science Innovation Fair, May 31, 5-8:30 p.m., Bruce Museum, 1 Museum Dr., Greenwich. High school students’ top projects from the competition on view; awards ceremony follows. Students in grades 9-12 may apply by April 12. Info: brucemuseum.org, kdzikiewicz@brucemuseum.org, 203-413-6747.

Trails Day, June 1, 1-2 p.m., CT Audubon Society’s Center at Fairfield, 2325 Burr St., Fairfield. Discover ponds, a garden marsh, temperate deciduous forest, meadow and swamp, while observing bird habitats on the trails and discussing efforts to protect them. Free, for all ages. Advance registration required: ctaudubon.org/fairfield-programs-events/.

CT Trails Day, June 2, 1-2:30 p.m., Coastal Center at Milford Point, 1 Milford Point Rd., Milford. Bird and nature walk along the salt marsh, beach, and wooded habitats of Milford Point. Free. Register: ctwoodlands.org/ct-trails-weekend/events-2019/milford-nature-walk-record-5260.

Southport Garden Stroll, June 7, 10 a.m. to 3 p.m., Pequot Library, 720 Pequot Ave., Southport. Tour private gardens in Southport. Tickets $25. Info: pequotlibrary.org.

Paranormal Dinner & Ghost Tour, June 13, 7-9:30 p.m., The Twisted Vine Restaurant, 285 Main St., Derby. Hosted by Ghost Storm. Includes dinner, lecture and a ghost tour. Cost: $39.95, plus tax & tip. Reservations: 203-734-2462.

Silver Sands Mollusk Walk, June 22, 9:15 a.m., Silver Sands State Park, 1 Silver Sands Pkwy., Milford. Leisurely interpretive walk to learn about CT’s marine mollusks. Offered by Ansonia Nature Center. Fee: $6. Registration: 203-736-1053.