Survey of cliff-nesting raptors, Dalton Highway Management Unit, 1999-2002

We surveyed the central portion of the Bureau of Land Management’s Dalton Highway Management Unit (DHMU) for cliff-nesting raptors and ravens from 1999 to 2002. We primarily used helicopters to conduct the search and found 76 unoccupied and 17 occupied nests. More raptors and raven nest sites occurred in the Dietrich River Valley, which is the more mountainous, cliff-rich section of the study area. This information will provide population data to help land managers make informed land-use decisions in the future.