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8183

img 13661 - 150 DPI
img 13662 - 150 DPI
img 13695 - 150 DPI

Charadriiformes
Waders, gulls and auks

Laridae Larus
Caspian Gull (Larus cachinnans)


age / gender juv.
finding location B81 Egeln
Salzlandkreis, Sachsen-Anhalt, Germany
finding circumstances traffic victim
finding date 12.08.2022
coll. A. Haase
created: 22.08.2022
showcase

remarks

Einige Federn bereits in der zweiten Generation. Scheinen im frühen Alter ausgefallen und bereits neu gewachsen zu sein.

species identification

Schwacher Gonydeal Winkel, helle Unterflügeldecken und heller Kopf spricht für Steppenmöwe. Dunkle Handschwingen und Steuerzeichnung lassen Silbermöwe ausscheiden.

measurements

longest primary P9=337,5mm
big individual
70% of max range of variation
308,5mm
350,0mm
longest secondary S19=182,0mm
longest retrix R5=192,0mm
big individual
90% of max range of variation
170,5mm
194,5mm
all values


P10 330.0mm
P9 337.5mm
P8 328.5mm
P7 317.0mm
P6 296.5mm
P5 263.5mm
P4 250.0mm
P3 229.5mm
P2 210.5mm
P1 193.5mm
S1 178.0mm
S2 174.5mm
S3 169.5mm
S4 164.5mm
S5 157.0mm
S6 158.5mm
S7 160.5mm
S8 157.0mm
S9 151.0mm
S10 160.0mm
S11 161.5mm
S12 160.5mm
S13 166.0mm
S14 166.5mm
S15 169.0mm
S16 169.0mm
S17 175.5mm
S18 179.5mm
S19 182.0mm
S20 181.0mm
S21 175.5mm
S22 158.5mm
S23 125.0mm
S24 83.5mm
R1 187.5mm
R2 190.5mm
R3 188.5mm
R4 190.5mm
R5 192.0mm
R6 186.5mm