7:30 a.m. — Bird walk led by Keith Lockhart at Lewisville Lake Environmental Learning Area. For bird watchers of all skill levels, ages 10 and older. Fee is $2, in addition to the regular gate fee of $5 per person. Reservations are suggested; call 972-219-3930. Front gate is at Jones Street and North Kealy Avenue in Lewisville. Visit www.ias.unt.edu/llela.
8 a.m. — Friends of the Sanger Library annual book sale, with books for adults in the meeting room of the library, 501 Bolivar St., and children’s items at the gazebo in the nearby park. Items cost 50 cents to $1. All remaining inventory will be reduced to half price at 2 p.m. Teachers can shop for free books at 4 p.m., and anyone can shop for free books at 4:30 p.m.
9 a.m. to 1 p.m. — Geocaching event at the Isle du Bois Unit of Ray Roberts Lake State Park, on FM455, 10 miles east of I-35. Participants can bring their own GPS unit or borrow one from park staff. Free with regular park admission, which is $7 for ages 12 and older. Call 940-686-2148.
9 a.m. to 1 p.m. — Volunteer training at Riding Unlimited therapeutic riding center, 9168 T.N. Skiles Road in Ponder. E-mail firstname.lastname@example.org or call 940-479-2016. Find volunteer registration forms at www.ridingunlimited.org.
9 a.m. to 3 p.m. — Arts, Antiques & Autos Extravaganza presented by the Denton Main Street Association, in and around the Courthouse on the Square, 110 W. Hickory St. Classic and custom cars, trucks and motorcycles will be on display. Bring antiques, collectibles and jewelry for informational appraisals. Event also includes fine arts and crafts vendors, silent auction, children’s activities and live music. Free. Visit www.dentonmainstreet.org.
9 a.m. to 6 p.m. — “Sign Up and Swing,” a golf-themed event promoting library cards, at South Branch Library, 3228 Teasley Lane. Free. Call 940-349-8752 or visit www.dentonlibrary.com. Free event includes six-hole putting course in the library and other activities. Call 940-349-8752.
10 a.m. — Nature walk on the Cicada Trail, led by a Texas Master Naturalist, at Lewisville Lake Environmental Learning Area. For all ages. Fee is $2, in addition to the regular gate fee of $5 per person, free for children 5 and younger. Reservations are suggested; call 972-219-3930. Front gate is at Jones Street and North Kealy Avenue in Lewisville. Visit www.ias.unt.edu/llela.
1 p.m. — Authors J. Nicole Williamson and Alisa Burns sign copies of their book, The Esther Mandate: The War for America’s Destiny, at Barnes & Noble Booksellers in Denton’s Golden Triangle Mall, 2201 S. I-35E.
3 p.m. — “Learn How to Use Overdrive E-books and E-audiobooks” at Emily Fowler Central Library, 502 Oakland St. Free. Call 940-349-8752 or visit www.dentonlibrary.com.
5 to 9 p.m. — Lake Dallas Green Chile Festival presented by the youth at Lake Cities United Methodist Church, 300 E. Hundley Drive in Lake Dallas. Event includes sales of fresh and roasted peppers, vendors and live music. Call 940-321-6100 or e-mail email@example.com.
6 p.m. — Concert and auction at Oak Grove United Methodist Church, 4725 FM720 West in Aubrey. Proceeds will benefit a local food bank, church outreach ministries and other charitable projects. Free, but love offerings will be accepted.
7:30 p.m. — Fight Boy Theatre presents Sketchy People, an original sketch comedy show, at Art Six Coffee House, 424 Bryan St. Tickets cost $10 at the door. For mature audiences. Visit http://fightboytheatre.webs.com.
Grupo 18 de Marzo Alcoholicos Anonimos meets from 7 to 8:30 p.m. at 100 W. Oak St. Call 940-231-9759.
Co-Dependents Anonymous, for people who desire healthy and loving relationships, meets from 10:30 to 11:30 a.m. at Denton Unitarian Universalist Fellowship, 1111 Cordell St. Call 940-320-2095 or 972-623-7423.
Compulsive Eaters Anonymous meets at 8:30 a.m. at Trinity United Methodist Church, 633 E. Hobson Lane. Call 940-387-9526.
Lupus Foundation of America support group meets from 2 to 3:30 p.m. at North Branch Library, 3020 N. Locust St.
Shalom Today group of Alcoholics Anonymous meets at 9 a.m., 11 a.m., 1:30 p.m., 6 p.m. and 8 p.m. at 311 S. Locust St. Call 940-383-8252.
Straight Up Group of Alcoholics Anonymous meets at 7:30 p.m. at Ponder United Methodist Church, 104 Remington Park Lane. Call 940-594-9169.
Whole New Deal Narcotics Anonymous group meets at 7:30 p.m. at St. Andrew Presbyterian Church, 300 W. Oak St. Call 940-898-0747.
To tell us about your event or meeting, visit DentonRC.com and click on “Let Us Know” for our online forms; e-mail to firstname.lastname@example.org; fax to 940-566-6888; or mail to Page 2 Calendar, Denton Record-Chronicle, 314 E. Hickory St., Denton, TX 76201.