Example 10
IMG 4663

Larus ridibundus

(Black-headed Gull, Mouette rieuse, Lachm÷we, Gaviota reidora)

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7 Primaries of the right wing

 

Feather P11 P10 P9 P8 P7 P6 P5
Length (mm) 62 224 231 223 205 187 169

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