SHEEP SHEARING, APRIL 7
Petaluma: Learn to card, spin and weave wool and make your own wool crafts during Sheep Shearing Day 11 a.m.-2 p.m. at Petaluma Adobe State Historic Park, 3325 Adobe Road. $3 adult, $2 children 6-17 and children under 5 free. 707-762-4871.
SCIENCE SATURDAY, APRIL 7
Santa Rosa: Learn how to write a secret message, practice your secret spy skills and learn how to make disappearing ink out of household items on Science Saturday beginning at 1,2 and 3 p.m. at the Environmental Discovery Center, Spring Lake Regional Park, 393 Violetti Road. Free for all ages. Parking $7. Call 707-539-2865 or visit SonomaCountyParks.org for information.
ANNADEL HALF MARATHON, APRIL 7
Santa Rosa: Register for the Annadel Half Marathon or the family friendly 5K run 8 a.m.-12 p.m. on April 7 at Spring Lake Regional Park, 5585 Newanga Ave. The half marathon is a hilly, technical run for experiences trail runners. It starts near the Spring Lake Oak Knolls picnic area and climbs over 1,700 feet in rocky terrain. Early registration is $75 and $85 after April 1. The 5K is an out-and-back run on a gravel fire road and starts at Oak Knolls and goes slightly into Trionne-Annadel State Park. Early registration is $40 and $45 after April 1. Register at www.annadelhalf.com/registration.html. Funds help build new trails at Taylor Mountain Regional Park. Parking $7, free for regional parks members. Visit SonomaCountyParks.org for details.
SPRING BIRDING, APRIL 8
Jenner: Join avian expert “Duck” Dave Barry on a free, strenuous birding hike for experienced hikers in the Jenner Headlands 10 a.m.-2 p.m. Meet at the new parking lot at the Jenner Headlands two miles north of Jenner on Highway 1. Dress warmly, heavy rain may cancel. Visit LandPaths.org for details.
WILDFLOWER WALK, APRIL 8
Santa Rosa: Take a five-mile Spring wildflower walk led by Shelly Spriggs up the north slope of Sonoma Mountain at North Sonoma Mountain Regional Park and Open Space Preserve, 5297 Sonoma Mountain Road 10 a.m.-2 p.m. Bring a hat, water, sunscreen and lunch. Parking $7. Register at SonomaCountyParks.org. 707-565-2041.
WOMEN’S BIKE SUMMIT, APRIL 8
Santa Rosa: The first ever Women’s Bike Summit starts 9 a.m. when mountain bike and road rides of 15-17 and 20-25 miles depart the Trail House, 4036 Montgomery Drive and return at 12:30p.m. for cold beverages and lunch, mingling with vendors and women’s cycling groups and a raffle until 2 p.m. The $20 cost covers a beer, burrito and Eventbrite fee. Visit the Sonoma County Bicycle Coalition’s website at bikesonoma.org for details.
LAGUNA EXPLORATION, APRIL 8
Cotati: Explore the upper reach of the Laguna de Santa Rosa during a 3-mile loop walk to the historic headwaters 10 a.m.-2 p.m. Bring a lunch, cookies provided $10-$15 sliding scale fee benefits the Laguna Foundation. Pre-registration required at lagunafoundation.org. 707-527-9277 ext. 100.
ART IN THE PARK, APRIL 8
Windsor: Bring your art supplies, your creativity, snacks and a lawn chair to Foothill Regional Park,1351 Arata Lane for a public art outing 1-3 p.m. Meet in the parking area. Parking $7. 707-565-2041. Visit SonomaCountyParks.org.
PUBLIC HIKE, APRIL 13
Santa Rosa: Guided, mild to strenuous 3-4-mile hike through forests and grasslands 9 a.m.-1 p.m. at Pepperwood Preserve, 2130 Pepperwood Preserve Road. Bring a lunch and meet at the Dwight Center