Buenos Aires National Wildlife Refuge provides approximately 118,000 acres of habitat for threatened and endangered plants and animals. The semidesert grassland supports the reintroduction of masked bobwhite quail and pronghorns. Prescribed and natural fires play a major role in maintaining and restoring the sea of grass that once filled the Altar Valley. Riparian (wetland) areas along Arivaca Cienega and Creek attract an abundance of birds. Brown Canyon is nestled in the Baboquivari Mountains, where a sycamore-lined stream meanders through oak woodland.
The refuge has a surface area of 117,107.16 acres (473.92 km² or 47,392 ha).
This article incorporates public
domain material from websites or documents of the United States Fish
and Wildlife Service.
Coordinates: 31°33′N 111°33′W / 31.55°N 111.55°W
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