Notes about your surroundings.

Upper Newport Bay Classes--A series of nature classes for children and their parents will be held in the coming weeks in the Upper Newport Bay area. The classes, sponsored by the California Department of Fish and Game and the Orange County Department of Harbors, Beaches and Parks, will include activities and exploration of the Back Bay.

The following are the topics and dates for each class.

* “Mud and Water,” Monday and Aug. 15. The class will focus on shells and plankton, as well as ocean pollution.

* “Animal Life,” Saturday and Aug. 24. Activities will include the making of animal tracks and fish prints, as well as looking for live crayfish and frogs.

* “Birds and Endangered Species,” Aug. 5. Participants will study bird nests, wings, beaks and feet. They will also learn about endangered bird species that are common to the bay area, such as the California least tern and the light-footed clapper rail.

* “Plants and Indians,” Aug. 10. Activities will include sun printing, cattail weaving and a nature walk.

The classes cost $3 per participant but are free to California Wildlife Campaign members. Children must be accompanied by a parent. The classes will meet in the Big Canyon parking lot on Back Bay Drive south of San Joaquin Hills Road.

Reservations are required. Call (714) 640-6746 for more information and reservations.

Fair Exhibit--The Sea & Sage chapter of the National Audubon Society is sponsoring an exhibit at the Orange County Fair, which continues through July 28.

The exhibit focuses on the California gnatcatcher and its coastal sage scrub habitat. The state is currently considering changing the tiny bird’s status from “candidate species” for the endangered species list to “endangered species.”

Information about the preservation of habitats and wildlife, other Audubon activities and the chapter’s upcoming events will also be available at the exhibit site.

The fairgrounds are at Fair Drive and Fairview Road in Costa Mesa.