Observer 142 PRBO International (Fall): From the far North Pacific to Mexico and Ecuador, PRBO's collaborative work is international in scope.

Observer 141 Return of the Least Bell's Vireo and Notes from the Field (Summer): Notes and discoveries from the field, including the return Least Bell's Vireos to the San Joaquin Valley, and an update on the Farallones Cassin's Auklets.

Observer 140, Farallon Archipelago Marine Protection (Spring): New research in the California Current aims to map biodiversity hot spots in the open ocean, potentially for future designation as marine wildlife protected areas.

Observer 139, PRBO's New Environment, the Northern San Francisco Bay Region (Winter): As PRBO looks forward to relocating its headquarters to Shollenberger Park near Petaluma, this Observer samples from our wealth of North Bay partnerships and projects.