Bird Walk with Rich Guthrie at Thacher Nature Center. 8 a.m. This is the best time to see birds dressed in their finest plumage and singing to find their mates. Rich Guthrie will share his knowledge about birds and more on a walk through varied habitats. Beginners are welcome, bring binoculars or borrow. Call 872-0800 to register.

Bethlehem Bike Expo: 10 a.m. to 1 p.m., held on the Albany County Helderberg-Hudson Rail Trail between Elsmere Avenue and Gardner Terrace.  For younger or inexperienced riders, the best location to start the Bike Expo will be at the American Legion at 16 West Poplar Drive.

Wonder Walk. 1 p.m. to 2:30 p.m. Join us for this 0.9-mile hike in the Pine Bush. We will use our senses to explore the big and the small, the living and non-living and the seasonal surprises around us. We will use Rachel Carson as inspiration, taking in everything around us, searching for a sense of wonder. All ages. Albany Pine Bush Discovery Center, 195 New Karner Road, Albany, NY. $3 per person/$5 per family/Children under 5 yrs free. Registration required.

Coach Budy Kenyon event. Former players (1965-1981) and friends of former GCHS football coach Bud Kenyon will gather at the West Albany Volunteer Fire Company station, 113 Sand Creek Road, Albany NY from 1 to 5 p.m. to honor Coach Kenyon. All former players and friends are invited. Additional information and requested RSVP to Bill Cain at

Hike: Take a break from your day and join us for a one-hour long hike along the trails of the Madison Avenue Pinelands. We will meet at the Madison Avenue Pinelands trailhead (#7). Adults only. Albany Pine Bush Madison Avenue Pinelands trailhead (#7) 12 p.m. to 1 p.m. Free. Registration required. 518-456-0655.

“Go With the Flow” Waterfall Walk at Thacher Park. Spring is the best time to enjoy waterfalls in the park. Call 872-0800 to register and for more information. 10 a.m.

Save the Pine Bush is sponsoring a hike to celebrate the spring equinox at 2 p.m. This Sunday hike is free to the public and you don't have to sign up, just show up and enjoy the beautiful pine bush.   Meet at the Discovery Center. Dogs are welcome. (518)465-8930.   

Calling all kids! Hug a Tree was developed to teach children a few of the most basic and vital survival principles. We will start with an indoor presentation and demonstrations (including a rescue dog!), followed by an outside presentation. There will be a guided hike following the program. Ages 6+. Free. Albany Pine Bush Discovery Center, 195 New Karner Road, Albany, NY. Registration required.  11 a.m. to 12 p.m.

Hike/Ski trip: Save the Pine Bush is sponsoring a free hike/ski trip in the pine bush. (518)281-9873. Dress appropriately for the weather. Bring your skis if there is snow. Meet at the Pine Bush Discovery Center on Route 155. 1 p.m.

"Backyard Birds and a Winter Walk" at Thacher Nature Center. Join the Great Backyard Bird Count!  View winter birds at our feeders, and get tips for identifying birds and how to use a field guide. Call 872-0800 to register and reserve snowshoes. 2 p.m.