Maine Coast Heritage Trust invites the public for a guided bird walk Saturday, May 28, with MCHT Steward and Naturalist, Kirk Gentalen, at Erickson Fields Preserve, located at 164 West St. in Rockport. From 8 to 10 a.m., Gentalen will lead a group around MCHT’s Teen Ag Garden and through the woods, teaching how to identify birds by sight and sounds, and discovering what other creatures inhabit the preserve. The walk is free and open to levels of experience. Registration is required. To register and for more information, visit aldermere.org/bird-walk or call 236-2739.