BRING YOUR BINOCULARS Join Redwood Region Audubon Society for a free guided field trip at the Arcata Marsh and Wildlife Sanctuary on Saturday, Feb. 10 from 8:30 to 11 a.m. Bring your binoculars and meet trip leader Bob Battagin at the end of South I Street (Klopp Lake) in Arcata for easy-to-walk trails, a beautiful view of Humboldt Bay, and a diverse range of overwintering birds, including ducks, shorebirds, herons and egrets, raptors and songbirds. Keep an eye out for otters and otter signs as they frequent the marsh ponds.

DUNES RESTORATION Dune Ecosystem Restoration Volunteer Days take place Saturday, Feb. 10 from 10 a.m. to 1 p.m. at the Humboldt Coastal Nature Center and Sunday, Feb. 18 from 10 a.m. to 1 p.m. at the Ma-le’l Dunes North. You can make a difference in the ecosystem, one invasive plant removal at a time. No experience is necessary. We will have snacks and tools to share. No need to reserve a spot, meet at the specified locations a few minutes before 10 a.m.

MARSH TOUR Friends of the Arcata Marsh (FOAM) is sponsoring a free tour of the Arcata Marsh & Wildlife Sanctuary on Saturday, Feb. 10. Meet leader Sharon Levy at 2 p.m. in the lobby of the Interpretive Center on South G Street for a 90-minute, rain-or-shine walk focusing on marsh history, wastewater treatment, birds and/or ecology. (707) 826-2359.

WILDLIFE REFUGE BIRDING Redwood Region Audubon Society will offer a free guided birding tour at Humboldt Bay National Wildlife Refuge on Sunday, Feb. 11 from 9 to 11 a.m. Meet leader Ralph Bucher at the Visitor Center for this two-mile walk along a wide, flat trail that is packed gravel and easily accessible. This refuge offers astounding and easy access to tidally-influenced habitats including mudflats, riparian vegetation, conifers and a bay that hosts a variety of geese, raptors, shorebirds and waders. Email Ralph to sign up at