Sudbury Valley Trustees (SVT) has released its Spring 2020 Program Calendar, which includes nature walks at conservation lands that the nonprofit land trust has helped to protect.

For those who like birds, SVT will lead birdwatching walks on April 22 and 23 in Wayland, May 13 in Littleton, and May 17 in Harvard. In addition, a presentation about springtime warblers is scheduled for April 16 at SVT headquarters in Sudbury.

For those more interested in plants, SVT has scheduled two outings that focus on tree identification: May 3 in Southborough and May 15 in Bedford. A wildflower walk is planned for May 9 in Berlin and Clinton.

SVT has planned additional nature walks for other communities and has also scheduled programs on coyote behavior, tick safety, “dark skies,” and geology.

SVT’s full calendar and registration information are available at www.svtweb.org/programs.