The Byron Airport Habitat Management Land (HML) is 814 acres in eastern Contra Costa County. The HML is situated in rolling terrain with low hills and ridges and gently sloping and virtually level intervening lowlands. The HML consists primarily of a mosaic of grasslands and wetlands. The uplands consist of annual grasslands and alkali grassland habitats. Natural seasonal wetlands, alkali wetlands, and vernal pools are present throughout the HML. The HML is home to many species of animals and plants, many are endangered or special-status species. Some of these species include the San Joaquin Kit Fox, California red-legged frog, vernal pool fairy shrimp, and the California tiger salamander. There are additional species that are found on the HML. A partial list would include the American badger, the western pond turtle, and many species of birds like the tri-colored black bird, burrowing owl, white-tailed kite, northern harrier and ferruginous hawk.