By editor
Gallatin County, North of Bozeman
The Bridger Mountains rise sharply to the east of the Gallatin Valley, a long, continuous ridge of limestone that acts as a massive barrier—and a massive funnel—for migrating birds. The sagebrush steppe at the base of the mountains transitions rapidly into dense coniferous forest, culminating in the rocky spine of the ridge.
In the fall, this ridge becomes the site of one of the most significant raptor migrations in the western United States. Up to three thousand Golden Eagles pass over the Bridger Ridge between September and November, utilizing the powerful updrafts generated by the prevailing westerly winds. From the observation point near the Bridger Bowl ski area, birders can watch these massive eagles, along with Northern Goshawks, Sharp-shinned Hawks, and Cooper's Hawks, streaming south at eye level.
Visitor Access
The Bridger Mountains are managed by the US Forest Service, and access is free. To reach the primary Hawk Watch site, birders must hike a steep, strenuous two-mile trail from the base of the Bridger Bowl ski area (which is closed to skiing during the fall migration) to the crest of the ridge. The hike requires excellent physical fitness and preparation for rapidly changing alpine weather.