520-281-2296, off I-19 or I-10 to AZ Hwy. 83, east of Green Valley, AZ. $5 parking fee and $10 for camping. Regular hours 6 a.m.–10 p.m. Allow 2–4 hours.An outstanding cross-section of Southwestern bird habitats. Summer is especially productive. Many trails, including a wheelchair accessible trail in lower canyon, cover range of life zones, from desert grassland to mountain forest. More than 200 bird species have been recorded here. Take lunch and enjoy picnic facilities, or dine nearby in Green Valley.