Longevity of Bald Eagles from Autumn Concentrations in Glacier National Park, Montana, and Assessment of Wing-Marker Durability
McClelland BR, McClelland PT, McFadzen ME. 2006. Longevity of Bald Eagles from Autumn Concentrations in Glacier National Park, Montana, and Assessment of Wing-Marker Durability. Journal of Raptor Research. 40(2):151-155
We present data collected subsequent to the publication of McClelland et al. (1994). In that study, 303 Bald Eagles (Haliaeetus leucocephalus) were banded with U.S. Fish and Wildlife Service pop-rivet aluminum leg bands between 1977 and 1993, in Glacier National Park, Montana (GNP). Wraparound patagial wing markers were placed on 121 of the 303 eagles and 66 were equipped with battery-powered VHF transmitters (55tail mounts and 11 backpacks). With few exceptions, Bald Eagles at autumn concentrations in GNP came from summering areas in northwestern Canada en route to wintering sites south and west of GNP. The eagles stopped in GNP to feed on spawning kokanee salmon (Onchorhynchus nerka). The kokanee population collapsed in the late 1980s; consequently, there no longer are autumn concentrations of Bald Eagles in GNP (Spencer et al. 1991).
- Type
- Journal Article
- Authors
- McClelland, B.; McClelland, Patricia; McFadzen, Mary
- Units
- GLAC
- Keywords
- Bald Eagle, eagle longevity, Haliaeetus leucocephalus, marker durability, Mortality, Wildlife, Wildlife Management, wing markers