The Sierra Vista Environmental Operations Park (EOP), also known as the waste water treatment plant, is open for bird walks each Sunday morning. The walks are led by docents from Southeastern Arizona Bird Observatory (SABO), Huachuca Audubon Society (HAS) and the Friends of the San Pedro River (FSPR).

When: 7 a.m. Allow at least 2 ½ hours
Where: EOP, Highway 90 between mileage markers 324 and 325 on the north side of the highway
Admission:  Free, but donations appreciated
Info: (520) 432-1388

Wine tasting/souvenir glass, winery/vineyard tours, live music/dancing, food prepared by local vendors.

When: 10 a.m. to 4 p.m.
Where: Sonoita Vineyards, 290 Elgin-Canelo Rd, Elgin
Admission: $15 per person
Info: 520-455-5893, or www.sonoitavineyards.com