Table 1 Prevalence of avian influenza virus antibodies as determined by a commercially available bELISA in raptors presented to The Raptor Center (St. Paul, MN) and captured at Hawk Ridge Bird Observatory (Duluth, MN).
Species | Number positive | Number tested | Percent positive |
|---|---|---|---|
The Raptor Center | |||
American Kestrel (Falco sparverius) | 0 | 2 | 0 |
Bald Eagle (Haliaeetus leucocephalus) | 67 | 97 | 69.07 |
Barred Owl (Strix varia) | 4 | 57 | 7.02 |
Broad-winged Hawk (Buteo platypterus) | 0 | 10 | 0 |
Cooper’s Hawk (Accipiter cooperii) | 0 | 10 | 0 |
Eastern Screech-owl (Megascops asio) | 0 | 9 | 0 |
Great Horned Owl (Bubo virginianus) | 5 | 36 | 13.89 |
Long-eared Owl (Asio otus) | 0 | 1 | 0 |
Merlin (Falco columbarius) | 0 | 5 | 0 |
American Goshawk (Accipiter atricapillus) | 0 | 2 | 0 |
Northern Harrier (Circus hudsonius) | 0 | 2 | 0 |
Northern Saw-whet Owl (Aegolius acadicus) | 0 | 6 | 0 |
Osprey (Pandion haliaetus) | 0 | 3 | 0 |
Peregrine Falcon (Falco peregrinus) | 0 | 2 | 0 |
Rough-legged Hawk (Buteo lagopus) | 1 | 4 | 25 |
Red-shouldered Hawk (Buteo lineatus) | 0 | 1 | 0 |
Red-tailed Hawk (Buteo jamaicensis) | 6 | 53 | 11.32 |
Short-eared Owl (Asio flammeus) | 0 | 1 | 0 |
Snowy Owl (Bubo scandiacus) | 0 | 1 | 0 |
Sharp-shinned Hawk (Accipiter striatus) | 0 | 6 | 0 |
Turkey Vulture (Cathartes aura) | 1 | 8 | 12.5 |
Total | 84 | 316 | 26.58 |
Hawk Ridge Bird Observatory | |||
Cooper’s Hawk (Accipiter cooperii) | 0 | 2 | 0 |
Long-eared Owl (Asio otus) | 0 | 1 | 0 |
American Goshawk (Accipiter atricapillus) | 1 | 14 | 7.14 |
Northern Harrier (Circus hudsonius) | 0 | 3 | 0 |
Northern Saw-whet Owl (Aegolius acadicus) | 0 | 3 | 0 |
Red-tailed Hawk (Buteo jamaicensis) | 1 | 9 | 11.11 |
Sharp-shinned Hawk (Accipiter striatus) | 0 | 19 | 0 |
Total | 2 | 51 | 3.92 |
