San Pedro Riparian National Conservation Area

520-439-6400, off AZ Hwy. 90, near Sierra Vista, AZ. Free. Visitor Center, 9:30 a.m.–4:30 p.m. Allow 2–4 hours.A strip of land on either side of the San Pedro River, stretching from the Mexican border north for 36 miles makes this one the largest and most varied areas open to birders. In late summer, many southbound migrating birds add to the mix of local nesters. Enjoy the riparian area here or ask about the current hot spots.