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Spotted Owl
(Strix occidentalis)

 

 

Skull




Dorsal View
Ventral View
Lateral View

 


Total Length Male = 72.15 - 74.17 mm Mean = 73.44 mm (n=5) Female = 73.59 - 76.80 mm Mean = 75.48 mm (n=5)
Width Male = 52.16 - 54.19 mm  Mean = 53.51 mm (n=7) Female = 53.14 - 55.69 mm Mean =54.00 mm (n=7)




 

Tarsometatarsus



Right and Left
Anterior View
Left and Right
Posterior View

 

Total Length Male = 54.56 - 56.74 mm Mean = 50.11 mm (n=10) Female = 53.38 - 56.85 mm Mean = 55.48 mm (n=10)
Proximal End Width Male = 10.74 - 11.30 mm Mean = 11.00 mm (n=9) Female = 11.46 - 12.20 mm Mean = 11.83 mm (n=10)
Distal End Width Male = 12.37 - 12.93 mm Mean = 12.70 mm  (n=9) Female = 13.29 - 13.77 mm Mean = 13.53 mm  (n=10)

 

 



Tibiotarsus




Right and Left
Anterior View
Left and Right
Posterior View

 

Total Length Male = 94.08 - 95.79 mm Mean = 95.01 mm (n=9) Female = 94.42 - 99.45 mm Mean = 97.32 mm (n=10)
Proximal End Width Male = 11.88 - 12.99 mm Mean = 12.20 mm (n=9) Female = 12.31 - 13.16 mm Mean =12.81 mm (n=10)
Distal End Width Male = 10.82 - 11.24 mm Mean = 11.02 mm  (n=9) Female = 11.61 - 12.14 mm Mean = 11.86 mm  (n=10)

 

 


 

Femur



Right and Left
Anterior View
Left and Right
Posterior View

 

Total Length Male = 64.80 - 66.69 mm Mean = 66.13 mm  (n=9) Female = 65.97 - 69.17 mm Mean = 67.95 mm  (n=10)
Proximal End Width Male = 11.53 - 12.18 mm Mean =11.81 mm  (n=9) Female = 11.98 - 12.94 mm Mean =12.41 mm (n=10)
Distal End Width Male = 11.82 - 12.19 mm Mean = 11.96 mm  (n=9) Female = 12.36 - 12.83 mm Mean = 12.66 mm (n=10)

 

 



Humerus




Right and Left
Anterior View
Left and Right
Posterior View

 


Total Length Male = 97.62 - 99.55 mm Mean = 98.45 mm  (n=9) Female = 97.63 - 102.80 mm Mean = 100.80 mm  (n=10)
Proximal End Width Male = 16.53 - 17.10 mm Mean = 16.87 mm  (n=9) Female = 16.98 - 17.69 mm Mean = 17.32 mm (n=9)
Distal End Width Male = 16.81 - 17.54 mm Mean =17.18 mm  (n=9) Female = 17.43 - 18.31 mm Mean = 17.81 mm (n=10)



 



Ulna


Left and Right
Extensor View
Right and Left
Palmer View

 

Total Length Male = 107.11 - 109.78 mm Mean = 108.33 mm  (n=9) Female = 107.82 - 114.27 mm Mean = 110.04 mm  (n=10)
Proximal End Width Male = 10.26 - 10.85 mm Mean =10.57 mm  (n=9) Female =10.91 - 11.29 mm Mean = 11.11 mm (n=10)
Distal End Width Male = 8.23 - 8.83 mm Mean = 8.48 mm  (n=9) Female = 8.53 - 9.13 mm Mean = 8.81 mm (n=10)

 

 



Radius



Right and Left
Dorsal or Extensor View
Left and Right
Ventral or Palmar View


Total Length Male = 103.25 - 105.28 mm Mean = 103.91 mm  (n=9) Female = 103.63 - 107.78 mm Mean = 105.54 mm  (n=8)
Proximal End Width Male = 6.02 - 6.55 mm Mean = 6.23 mm  (n=9) Female = 6.08 - 6.74 mm Mean = 6.37 mm (n=10)
Distal End Width Male = 8.49 - 8.81 mm Mean = 8.65 mm  (n=9) Female = 8.63 - 9.27mm Mean =8.98 mm (n=8)

 

 


 

Carpometacarpus



Right and Left
Palmar View
Left and Right
Extensor View

 

Total Length Male = 49.27 - 50.23 mm Mean =49.72 mm  (n=9) Female = 49.82 - 52.48 mm Mean = 51.16 mm  (n=9)
Proximal End Width Male = 10.25 - 10.71 mm Mean = 11.00 mm  (n=9) Female = 11.09 - 12.47 mm Mean = 11.78 mm (n=9)
Distal End Width Male = 9.12 - 10.84 mm Mean = 9.95 mm  (n=9) Female = 9.20 - 11.01 mm Mean = 10.39 mm (n=9)

 

 

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