Example 22
IMG 2948

Asio otus

(Long-eared Owl, Hibou moyen-duc, Waldohreule, Bho chico)

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6 Secondaries (S6 - S1) of the left wing

 

Feather S6 S5 S4 S3 S2 S1
Length (mm) 136 137 142 142 145 146

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