Example 1
IMG 4506

Larus ridibundus

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

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2 Alula-feathers and 7 primaries of the right wing

 

Feather P11 P10 P9 P8 P7 P6 P5
Length (mm) 63 233 239 231 210 192 177

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