The Turtle Rock Nature Center offers a nature-related birthday party package for children ages 4 to 10 on Saturdays and Sundays.
Parties include a guided trail hike, animal visit, theme-related crafts, refreshments and favors.
The fee is $185 for a two-hour party with a maximum of 16 children.
Reservations should be made at least four weeks in advance. Information: (714) 854-8151.