Notes about your surroundings

Wheel Fun--Take a 27-mile bike ride through Aliso and Wood Canyons Regional Park in Laguna Niguel at 9 a.m. Saturday.

The ride, sponsored by Sierra Sage, will stay on the paved trails through this 3,400-acre parkland. The canyons are green and lush from the recent rains. Sights include waterfalls and cliffs.

A variety of birds are indigenous to the area, including red-tailed hawks, woodpeckers, finches and mountain bluebirds.

To ensure your ride is a good one, check your bike’s brakes and tires beforehand. Also bring drinking water. Although there are water fountains throughout the park, bicyclists often benefit by carrying their own supply. Restroom facilities are also located in the park.

Aliso and Wood Canyons Regional Park is at Alicia Parkway and Aliso Creek Road in Laguna Niguel. Ride information: (714) 363-1142.

Walk About--The Nature Conservancy group is sponsoring guided public tours of the Irvine Co. Open Space Reserve on Saturday. The first hike begins at 7:30 a.m.; the second is at 10 a.m.

These 2 1/2-mile hikes will explore the northern reserve including Limestone Canyon. The canyon is filled with riparian woodland, coastal sage scrub, live oak and chaparral.

The walking tour is moderately easy and suitable for children 5 and older. Hikers should wear sturdy, comfortable shoes and carry drinking water. Binoculars and a bird identification book would be helpful to those with avian interests.

The northern reserve is off Santiago Canyon Road near Silverado and Modjeska canyons. Information and reservations: (714) 832-7478.