Merced and San Luis Wildlife Refuge Nature Walk
San Joaquin River Parkway & Conservation, 11605 Old Friant Road, Fresno, 559-248-8480, www.riverparkway.org. 7:45 a.m.
Fresno County Master Gardeners: Fall and Winter Orchard
Garden of the Sun, 1750 N. Winery Ave., Fresno, 559-241-7515, ucanr.org/sites/mgfresno, $15, no cash checks only. 9:30-11 a.m.
Gardening Angels Volunteer Day at the River Center
San Joaquin River Parkway & Conservation, 11605 Old Friant Road, Fresno, 559-248-8480, www.facebook.com/events/450807065078715, Free. 8:15 a.m.-noon
Lost Lake Christmas Bird Count
Lost Lake Park, 16385 N. Friant Road, Fresno, 559-313-4546, www.audubon.org/conservation/science/christmas-bird-count. 7 a.m.