Weekend Picks

The best activities and things to do this weekend in northern Westchester:

Earth Day Weekend Exercise your green thumb or help the farmers care for the animals. Take an in-depth tour of the farm and learn about composting, bio-diesel production, or the benefits of pastured livestock. Saturday and Sunday, 10:00 to 3:00. Stone Barns Center for Food and Agriculture

Croton Earth Day Celebrate Earth Day at Senasqua Park with games, crafts, and music by Fred Gillen Jr., Solar Punch, and David Goldman. Saturday, 9:00 to 1:30. Senasqua Park

Stream Monitoring Training Workshop Learn and practice how to use water monitoring equipment, collect and identify river creatures, and measure physical conditions. Saturday, 9:00 to 4:00. Hilltop Hanover Farm

Early Spring Bird Walk A farm naturalist leads a bird walk to see the returning birds and those just passing through on their spring migration. Saturday, 8:00 to 10:00. Muscoot Farm

Celebrating Earth Day The fun starts at 10:00 with the planting of trees to help Owls and other wildlife. At 2:00 you can learn about the resident turtles and take a short hike down to Bechtel Lake to watch the staff set turtle traps. Saturday. Westmoreland Sanctuary

Lessons from the Lorax Do you speak for the trees? After a reading of Dr. Seuss’ The Lorax, participants will join in an active quest, using a map and finding clues to locate hidden treasure. Saturday, 11:00. Teatown Lake Reservation

Chinese Puppet Show The Chinese Theatre Works (above) presents a puppet performance of “Wu Song Fights the Tiger.” There will also be music played on a guzheng, and children can make a shadow puppet. Saturday, 1:30. Hammond Museum

Nature Scavenger Hunt Celebrate spring and sharpen your observation skills with a self-guided scavenger hunt using our checklist. Saturday 10:00 to 2:00. Ward Pound Ridge Reservation

Stone and Woodworking Workshop Learn how to shape wood with fire and stone tools, make a spoon, bowl, or even a miniature canoe. Saturday 1:00. Croton Point Park Nature Center

Spring Twilight Hike Find out what goes on in the evening at this time of year. Saturday, 7:00. Ward Pound Ridge Reservation

Rob Bartlet Stand up comic Rob Bartlett from Imus in the Morning gives his take on celebrity culture, world politics, and more. Saturday, 8:00. Tarrytown Music Hall

Operas by Puccini The Taconic Opera performs two operas by Puccini, "Il Tabarro" and "The Medium." Saturday, 8:00; Sunday, 2:00. Yorktown Stage

Andrew Craig Enjoy the "pseudo jazz, Brazilian bossa nova, Celtic, pop, and folk" sounds of Andrew Craig. Sunday, 1:00. Peekskill Coffee House

Check Out the Chickens Learn about the farm's chickens and enjoy making a chicken-related craft. Sunday, 1:00 to 3:00. Muscoot Farm

Doubt The prizewinning play by John Patrick Shanley, presented by M&M Productions, tells the story of two nuns, a priest, and a concerned parent. Sunday, 2:00. John C. Hart Library