Raptor Population Index

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RPI Analysis Summary: Hawk Mountain Sanctuary

The initial RPI analysis effort examined hourly raptor migration count data from seven hawk watch sites in Canada and the United States. The following trend data and graphs indicate the population trends found for each of 15 species observed at Hawk Mountain Sanctuary.

Hawk Mountain has also published conservation assessments for several raptor speices.

Trend Data
Hawk Mountain raptor count trend data (Excel spreadsheet)

This spreadsheet organizes years by row and trend data by column. The sheet includes three sets of columns: the first indicates$

Species trend graphs

American Kestrel (Falco sparverius)
Bald Eagle (Haliaeetus leucocephalus)
Broad-winged Hawk (Buteo platypterus)
Cooper's Hawk (Accipiter cooperi)
Golden Eagle (Aquila chrysaetos)
Merlin (Falco columbarius)
Northern Goshawk (Accipiter gentilis)
Northern Harrier (Circus cyaneus)
Osprey (Pandion haliaeetus)
Peregrine Falcon (Falco peregrinus)
Rough-legged Hawk (Buteo lagopus)
Red-shouldered Hawk (Buteo lineatus)
Red-tailed Hawk (Buteo jamaicensis)
Sharp-shinned Hawk (Accipiter striatus)
Turkey Vulture (Cathartes aura)