Example 1
IMG 0470

Larus argentatus

(Herring Gull, Goéland argenté, Silbermöwe, Gaviota argéntea)

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5 Tail-feathers (Ta and Tb of juvenile birds, Tc – Te of adult birds)

 

Feather Ta Tb Tc Td Te
Length (mm) 170 178 174 174 178

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