Example 12
IMG 0421

Hirundo rustica

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

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9 Tail-feathers

 

Feather   T5 T4 T3 T2 T1   T2   T4 T5 T6
Length (mm)   67 60 55 52 49   51   59 66 105

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