Build a Backyard Birdhouse Learn to identify the housing needs of local bird species

Build a Backyard Birdhouse Learn to identify the housing needs of local bird species, and then assemble a bird house. Minimum age of 6. Fee includes bird house building materials: $35 MA Audubon member/$39 non-members. Stony Brook Wildlife Sanctuary, 108 North St., Norfolk. 2 to 4 p.m.