Hogle Zoo will celebrate national Conservation Day on Saturday from 10 a.m. to 2 p.m., a spokesman said.

"Wildlife passports" will be available to the first 1,000 youngsters, 14 years and younger who visit the zoo that day. Passport holders may travel through habitat zones in Discovery Land at the east end of the zoo while learning about conservation.In other activities:

- Olympus High School's Conservation Club will paint zoo animals on youngsters' hands to raise funds for the zoo's "Adopt a Wild Child" program.

- Birthday cake will be served to celebrate the 23rd birthday of Eleanor, a peregrine falcon used by the zoo's education department.

- The Capitol West Boys and Girls Club will kick off a campaign to support conservation of the desert tortoise in Utah.

- Mountain Fuel Supply Co. will demonstrate the efficiency and environmental benefits of natural gas appliances.

- Reynolds Aluminum will accept cans for recycling, with proceeds going to the zoo's tree planting project.