A hike up to Wasson Peak, the highest point in the Tucson Mountains, takes place at 2:15 p.m., Friday, Jan. 14. Reservations are required. Meet a Harris' hawk, an elf owl and a great horned owl at a presentation titled "Wildlife Rehabilitation" at 3 p.m., Saturday, Jan. 15. Experience the desert in twilight glow and moon shadows on a hike at 4:15 p.m., Saturday, Jan. 15. Reservations are required. A hike during the transition from day to night takes place at 4:15 p.m., Monday, Jan. 17. Reservations are required. Relax around a campfire and watch the moon rise above the cactus forest at 6:30 p.m., Wednesday, Jan. 19. Events are free with a park-use fee of $10 per vehicle; or $5 for pedestrians or bicyclists. Call for reservations or more information.