POST-FIRE HIKE, JAN. 20

Santa Rosa: Pepperwood Preserve manager Michael Gillogly leads a post-fire renewal hike exclusively for Pepperwood Preserve members, 9 a.m. to 1 p.m. Meet at the Dwight Center, 2130 Pepper Preserve Road. A reception follows the hike. Call 707-486-2931.

WATERFOWL PRESENTATION, JAN. 20

Santa Rosa: “Duck Man” Dave Barry discusses the different types of waterfowl and their characteristics that are found in Sonoma County, 3 to 4:30 p.m. at Heron Hall in the Laguna Environmental Center, 900 Sanford Road. The Laguna de Santa Rosa is an important stopover along the Pacific Flyway for thousands of migrating ducks and birds. $12. Register at lagunafoundation.org

SUNRISE NATURAL HISTORY WALK, JAN. 21

Santa Rosa: “Duck Man” Dave Barry leads a walk where waterfowl love to hang out in the Laguna de Santa Rosa, 7:30 to 11 a.m. $35. Register at lagunafoundation.org.

BIKE MAINTENANCE, JAN. 23

Santa Rosa: Learn how to fix a bicycle tire flat, 7 to 8:30 p.m. at the REI store, 2715 Santa Rosa Ave. $19 for REI members, $39 for nonmembers. Call 800-426-4840.

NATURE TALK, JAN. 27

Bodega Bay: Learn about the underwater life of the sea star, 10:30 a.m. to noon at Doran Regional Park, 201 Doran Beach Road. Parking, $7. Meet at the amphitheater behind the Jetty Campground restroom. Call 707-565-2041 or visit SonomaCountyParks.org.