Wildlife in Palo Alto
The park encompasses 1,940 acres that are the largest tract of undisturbed marshland remaining in the San Francisco Bay. There are 15 miles of paved and dirt hiking and biking trails that access both salt and fresh water habitats. There are three sloughs, three ponds and two creeks in the area. The preserve has a large resident population of birds and is a major migratory stopover on the Pacific Flyway.