Example 11
IMG 0423

Hirundo rustica

(Barn Swallow, Hirondelle rustique, Rauchschwalbe, Golondrina común)

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9 Primaries of the right wing

 

Feather S1 S2 S3 S4 S5 S6 S7
Length (mm) 51 49 49 48 48 46 45

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