The One-Four Research Farm comprises 17,000 ha of dry mixed-grass prairie, of which 70 per cent is native grassland. OneFour supports one of the highest densities of rare species in the Prairie Ecoregion, has high value to endemic grasslands songbirds as breeding habitat, and has high value for at least 23 federally listed species at risk. One-Four is proposed for protection as a Cooperative Wildlife Management Area under the Canada Wildlife Act.