A bird-spotting challenge in San Francisco identified an impressive 149 species in just 24 hours The rich and varied habitats of the San Francisco region are the permanent or temporary home of 444 species of birds. This beautifully illustrated guide highlights over 140 familiar and unique species and includes a map featuring prominent bird-viewing areas. Laminated for durability, this lightweight, pocket-sized folding guide is an excellent source of portable information and ideal for field use by visitors and residents alike. Made in the USA.