Tijuana Slough National Wildlife Refuge, Nature reserve in San Diego, United States
Tijuana Slough National Wildlife Refuge is a nature reserve covering about 1,072 acres of wetlands on the California coast. The area consists of salt marshes, mudflats, and shallow water channels where the Tijuana River meets the Pacific Ocean.
The refuge was established in 1980 as part of a national estuarine research reserve system. Its creation reflected growing recognition that coastal wetlands needed legal protection from development and habitat loss.
The refuge serves as a learning hub where visitors experience wetland ecosystems through guided walks and nature programs throughout the year. People gather here to observe how birds and other wildlife use the salt marsh as a critical stopover point during migration seasons.
Visit early in the morning or late afternoon when wildlife is most active and lighting is best for observing birds. The visitor center provides trail maps and guidance to help you navigate the wetland paths safely.
The site supports around 370 bird species, including rare species like the California least tern and light-footed Clapper Rail. This extraordinary diversity makes it a critical waypoint for migratory birds traveling between North and South America.
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