Don’t miss

1 Birds and climate change

A discussion on “Birds and Climate Change: Where Do We Go from Here?” will be the subject of the monthly meeting of the Black Hills Audubon Society; the topic is the subject of a report recently released by the national Audubon organization. Doors open at 7 p.m., with program at 7:30 p.m., Thursday; First Christian Church, 701 Franklin St. SE, Olympia. Free. blackhills-audubon.org.

2 Point Defiance beach cleanup

Every third Saturday of the month, volunteers are needed for a beach cleanup starting at the Point Defiance Marina. 9 a.m.-noon Saturday; Point Defiance Marina Complex, 5912 N. Waterfront Dr., Tacoma. Free. pointdefiancemarina.com or metroparkstacoma.org/chip-in.

3 Potlatch park paddle

The South Sound Area Kayakers will host this kayak trip; plan to be ready to launch at 10 a.m. Saturday from Potlatch State Park in the southwest corner of Hood Canal on U.S. Highway 101. Free, but a Discover Pass is needed to enter the park. ssak.hctc.com/newpaddleschedule.htm.

4 Why we have seasons

Ken Slavens will give a presentation on the “Reason for the Seasons” during the Tacoma Astronomical Society’s next public night program; night sky viewing will take place after, weather permitting. 7:30-11 p.m. Saturday, Rainier Building, Pierce College Fort Steilacoom campus, Lakewood. Free. tas-online.org/public_nights.php.