Corn Creek IBA possesses an Atriplex spp. (primarily polycarpa) and creosote community which is the densest and most intact within Clark County. Within this habitat, LeConte's and Crissal Thrashers nest in the branch overhangs since the vegetation is ideal for nest building. In fact, this IBA has the highest density of nests and pairs/ha in the region. The core habitat for these two species is adjacent to the Desert National Wildlife Refuge and Corn Creek Springs township. To the north is the Nevada Test Site (DoD).
Leconte's and Crissal Thrashers have strong associations with Atriplex dominant communities and desert wash vegetation and soils. This IBA has the highest density of nests and breeding pairs/ha in the region. Other species, such as Gambel's Quail, Gray Flycatcher, Loggerhead Shrike, Brewer's Sparrow, Lucy's Warbler, Sage Sparrow, and Phainopepla also utilize the vegetative communities within the key habitats within the IBA. During the migratory period, peak counts have 89 species migration through the area.
Development on this largest Atriplex community in the area is a major threat. Solar arrays and other energy development would have significant negative effects. This area has been proposed as an AC/EC to BLM. The Fish & Wildlife Service is currently restoring Corn Creek and the riparian zone on the refuge.
A majority of this IBA is made up of Atriplex/creosote communities.