This weekend: Plant trees for orcas at Squaxin Park, plus a fairgrounds swap meet, a weavers' sale and a downtown duck hunt

Volunteers can spend Saturday planting native trees and shrubs at Olympia's Squaxin Park as part of Orca Recovery Day, a statewide day of action for Puget Sound's endangered Southern Resident orcas.

The Thurston Conservation District and the City of Olympia host the work party 10 a.m. to 2 p.m. Saturday, Oct. 17, at Shelter 1, 2600 East Bay Drive NE, according to the city. Along with planting and removing invasive plants, the day includes a guided shore walk and refreshments.

Why orcas, and why trees. About 80% of the Southern Residents' diet is salmon, which are also endangered, the conservation district says. Restoring shoreline and stream habitat helps the fish, and in turn the whales.

How to join. Register through the Thurston Conservation District. The city's volunteer page says sign-up there alone isn't enough. Tools, gloves and light refreshments are provided. Wear sturdy shoes that can get muddy, and bring a water bottle. An adult must accompany children under 14, and teens without a parent need an online waiver. Questions: 360-753-8365 or [email protected].

A drier option. Downtown, the WET Science Center, 500 Adams St. NE, holds a free Orca Recovery Day event from 10 a.m. to 4 p.m. Saturday, where families can practice ways to protect orca habitat and make an orca to take home, according to Experience Olympia & Beyond.

Also this weekend:

• Secondhand Safari, a community garage sale, swap meet and craft fair at the Thurston County Fairgrounds, 3054 Carpenter Road SE, Lacey: noon to 4 p.m. Friday and 8 a.m. to 4 p.m. Saturday, according to The JOLT.
• Olympia Weavers Guild Show and Sale, also at the fairgrounds: 11 a.m. to 6 p.m. Saturday. Admission and parking are free, according to OLY ARTS.
• LoveOly Halloween scavenger hunt, downtown Olympia, Oct. 17-31: Find costumed rubber duckies hidden in participating shops and restaurants, collect stickers on a passport and turn it in by 6 p.m. Oct. 31 for a chance at gift-card prizes, according to The JOLT and Experience Olympia & Beyond.
• Toast for Tails, a strolling supper with food stations and auctions benefiting Concern for Animals' pet food bank and vet-bill assistance: 5 to 8:30 p.m. Saturday at South Puget Sound Community College's Lacey campus, 4220 Sixth Ave. SE. Tickets are $125, according to Experience Olympia & Beyond.