Example 1
IMG 4769

Carduelis carduelis

(Goldfinch, Chardonneret élégant, Stieglitz, Jilguero)

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9 Secondaries of the left wing

 

Feather S9 S8 S7 S6 S5 S4 S3 S2 S1
Length (mm) 28 38 45 48 48 49 50 51 52

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