Where alpine ridges descend into broad sagebrush basins, the Bighorn Mountains & Basins form one of Wyoming’s most varied birding regions. The Bighorns rise sharply above surrounding plains, offering subalpine forests, meadows, and high-country lakes, while the flanking basins hold irrigated fields, reservoirs, and extensive sagebrush. Seasonal changes create striking contrasts: mountain forests echo with breeding songbirds in summer, fall concentrates waterfowl and raptors in the valleys, and winter emphasizes open-country species across the plains. Access from Sheridan, Buffalo, and Lovell allows birders to move easily between elevations and explore both rugged highlands and quieter lowlands. This combination of accessible mountain habitats and lightly birded basins defines the region’s distinct character.