Former HWI Migration Sites

HawkWatching History

HawkWatch International operates the largest network of long-term raptor migration sites in the world. Since our founding in 1986, the migration network has evolved alongside changing conservation concerns, scientific priorities, partnership opportunities, and available funding. Although we’ve focused on maintaining uninterrupted migration monitoring at a core set of sites, we have a long history of hawkwatching across the western United States. This page highlights some of these historic hawkwatches and the important role they’ve played in helping us understand raptors and their migration patterns. Although some of these sites are no longer operational, they are still fantastic places to witness the magic of migration.

Former Spring Sites

Sandia Mountains HawkWatch

Location: New Mexico, (N 35.08667, W -106.4325 )
Operated: 1985-2009
Species Observed: 22
Average Count: 3,957
Current Operator: N/A

The Sandia Mountains HawkWatch monitored long-term trends in raptor populations in the southern portion of the Rocky Mountain migratory flyway. Starting in 1990, the site also began trapping efforts. The most commonly seen raptor species were Turkey Vultures, Cooper’s Hawks, Sharp-shinned Hawks, Golden Eagles, and Red-tailed Hawks.

Rogers Pass HawkWatch

Location: Montana, (N 47.08004, W -112.37895 )
Operated: 1992-2002
Species Observed: 14
Average Count: 1,666
Current Operator: N/A

The Rogers Pass HawkWatch monitored long-term trends in raptor populations along the northern Rocky Mountain migratory flyway, with a focus on Golden Eagles. This route was particularly attractive in the spring due to the abundance of Columbian Ground Squirrels and Black-tailed Prairie Dogs newly emerged from winter burrows, carrion from spring calving, and migrating waterfowl for raptors to feed on. Over 90% of the raptors counted at this site were Bald or Golden Eagles.

Jordanelle HawkWatch

Location: Utah (N 40 35.533, W 111 26.500)
Operated: 1997-2002
Species Observed: 18
Average Count: 4,202
Current Operator: N/A

The Jordanelle HawkWatch monitored long-term trends in raptor populations along the Rocky Mountain migratory flyway. This site was close to our Salt Lake City headquarters, providing a nearby opportunity for education efforts. We also conducted three years of exploratory trapping and banding. The most commonly seen raptor species were Turkey Vultures, Red-tailed Hawks, Cooper’s Hawks, Sharp-shinned Hawks, and Bald Eagles.

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