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7627

img 13102 - 150 DPI
img 13101 - 150 DPI

Charadriiformes
Waders, gulls and auks

Sternidae Sterna
Common Tern (Sterna hirundo)

Foto der Art Sterna hirundo (Flussseeschwalbe) © Sylvia Urbaniak

subspecies S. h. longipennis
age / gender 2nd cy
finding location Hunabashi, Chiba Prefecture, Japan
Japan
finding circumstances washed up
finding date 30.08.2020
coll. M. E. Inumaru
2020/S-2
Collection in Japan
created: 11.01.2022
showcase

measurements

feathers

longest primary P9=P10=205,5mm
small individual
29% of max range of variation
196,0mm
229,0mm
longest secondary S16=86,0mm
longest retrix R6=152,0mm
average individual
53% of max range of variation
132,5mm
169,5mm
primary/secondary difference 130mm
primaries-index 63%
all values


P2 94.5mm
P3 106.5mm
P4 121.5mm
P5 138.5mm
P6 156.0mm
P7 175.5mm
P8 189.5mm
P9 205.5mm
P10 205.5mm
S1 75.5mm
S2 72.0mm
S3 72.0mm
S4 73.5mm
S5 74.5mm
S6 75.0mm
S7 75.0mm
S8 74.0mm
S9 74.5mm
S10 76.0mm
S11 76.5mm
S12 81.0mm
S13 80.5mm
S14 81.5mm
S15 82.5mm
S16 86.0mm
R1 82.0mm
R2 85.0mm
R3 93.5mm
R4 103.0mm
R6 152.0mm