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11048

img 17513 - 150 DPI
img 17514 - 150 DPI

Charadriiformes
Waders, gulls and auks

Laridae Larus
Great Black-backed Gull (Larus marinus)


age / gender 1st winter
finding location Norderney
finding circumstances washed up
finding date 18.01.2025
coll. A. Haase
created: 19.01.2025
showcase

age identification

Bestimmung Silber- o. Mantelmöwe nicht eindeutig geklärt

measurements

longest primary H9=333,0mm
small individual
15% of max range of variation
323,5mm
387,0mm
longest secondary A1=184,5mm
all values







A17 178.5mm
A9 168.5mm
A10 169.5mm
A11 170.0mm
A12 171.0mm
A13 171.5mm
A14 175.0mm
A15 174.5mm
A16 176.5mm
H9 333.0mm
A18 178.0mm
A19 176.5mm
A20 167.5mm
A21 147.0mm
S4 186.5mm
S5 187.0mm
H10 325.5mm
A7 165.5mm
A8 168.5mm
H8 326.0mm
H7 305.0mm
H6 285.0mm
H5 265.5mm
H4 247.0mm
H3 227.0mm
H2 210.0mm
H1 195.0mm
A1 184.5mm
A2 180.5mm
A3 177.0mm
A4 175.5mm
A5 170.0mm
A6 168.5mm