1 Birding Fort Steilacoom
Join this guided walk for birders of all skill levels; bring binoculars and field guides if you have them; dress for the weather; 8 a.m.-12:30 p.m. Tuesday; meet in the parking lot between the barns and Waughop Lake; Fort Steilacoom Park, 8714 87th Ave. SW, Lakewood; for more information, contact Russ Smith at email@example.com.
2 Olympia pier peer
Join marine educators from the South Sound Estuary Association and learn about the marine creatures that live in Puget Sound; bring a flashlight and dress for the weather; 9 p.m. Friday; Boston Harbor Marina, 312 73rd Ave. NE, Olympia; $10 for 12 and older, free for children 6-11 with an adult; register at sseacenter.org.
3 Kids fishing derby
Children will have the chance to catch fish and win prizes at a fishing derby at Lake Sylvia; prizes will be awarded to age groups 13-15, 10-12, 7-9 and 6 and younger; 1-8 p.m. Saturday; Lake Sylvia State Park, Montesano; pre-registration is required, Friday from 3-8 p.m. at the Montesano Moose Lodge; 360-249-6211.
4 Ancient astronomy
Alice Few, a member of the Tacoma Astronomical Society, will give a presentation on ancient astronomy at the club’s public night program; night sky viewing will follow, weather permitting; 9 p.m.-midnight Saturday; Rainier Building, Pierce College Fort Steilacoom Campus, Lakewood; free; tas-online.org.