Example 11
IMG 1237

Accipiter nisus

(Sparrowhawk, Epervier d'Europe, Sperber, Gavilán común)



4 Secondaries of the right wing; 2 underwing-coverts


Feather  S9 S10 S11 S12
Length (mm) 110 107 102 95

To see the feather in natural size follow the Instruction.
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