7:30 p.m., Ridgefield National Wildlife Refuge, 1071 S. Hillhurst Rd., Ridgefield. Five full moon hikes on the Oaks to Wetlands Trail. Join us throughout the summer during full moons through August. Free, but space is limited. The hikes on May 6 and Aug. 2 begin at 8 p.m., while the hikes of June 4 and July 3 start at 8:30 p.m. * RSVP: Sarah Hill, 360-887-3883 or Sarah_Hill@fws.gov.