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Ulna - End Widths

 

 

 

 

List of measurements of end width Ulna for the different Species of Falconiformes and Strigiformes in British Columbia



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Species - Proximal End mm Species - Distal End mm
       
Northern Pygmy-Owl 2 - 5 Flammulated Owl 2 - 4
Flammulated Owl 3 - 5 Northern Pygmy-Owl 2 - 4
Northern Saw-whet Owl 4 - 6 Northern Saw-whet Owl 3 - 5
American Kestrel 4 - 7 Boreal Owl 3 - 8
Western Screech-Owl 5 - 7 American Kestrel 4 - 6
Eastern Screech-Owl 5 - 7 Western Screech-Owl 4 - 6
Burrowing Owl 5 - 7 Burrowing Owl 4 - 6
Merlin 5 - 8 Sharp-shinned Hawk 4 - 7
Boreal Owl 5 - 8 Merlin 4 - 7
Sharp-shinned Hawk 5 - 9 Copper's Hawk 5 - 7
Northern Hawk Owl 7 - 9 Eastern Screech-Owl 5 - 7
Long-eared Owl 7 - 9 Long-eared Owl 5 - 7
Short-eared Owl 8 - 10 Short-eared Owl 6 - 8
Copper's Hawk 8 - 11 Northern Hawk Owl 6 - 8
Barn Owl 8 - 11 Barn Owl 6 - 9
Northern Harrier 9 - 13 Swainson's Hawk 6 - 11
Prairie Falcon 9 - 13 Northern Goshawk 7 - 9
Peregrine Falcon 9 - 15 Northern Harrier 7 - 10
Spotted Owl 10 - 12 Barred Owl 7 - 10
Barred Owl 10 - 13 Prairie Falcon 7 - 11
Swainson's Hawk 11 - 15 Spotted Owl 8 - 10
Red-tailed Hawk 11 - 16 Rough-legged Hawk 9 - 11
Rough-legged Hawk 11 - 16 Red-tailed Hawk 9 - 12
Great Gray Owl 12 - 15 Peregrine Falcon 9 - 13
Northern Goshawk 12 - 16 Great Gray Owl 9 - 13
Gyrfalcon 13 - 16 Ferruginous Hawk 10 - 13
Great Horned Owl 13 - 16 Gyrfalcon 11 - 13
Ferruginous Hawk 13 - 20 Osprey 11 - 14
Osprey 14 - 19 Snowy Owl 11 - 15
Snowy Owl 14 - 19 Great Horned Owl 12 - 16
Golden Eagle 21 - 27 Bald Eagle 13 - 18
Bald Eagle 21 - 28 Golden Eagle 14 - 18


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