Example 2
IMG 0874

Phylloscopus trochilus

(Willow Warbler, Pouillot fitis, Fitis, Mosquitero musical)

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9 Secondaries of the right wing

 

Feathers S1 S2 S3 S4 S5 S6 S7 S8 S9
Length (mm) 42 41 40 39 37 35 34 28 22

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