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Beleg #3925

Abb. 5613 - 150 DPI
Abb. 5614 - 150 DPI

Charadriiformes
Regenpfeiferartige

Laridae Larus
Silbermöwe (Larus argentatus)

Alter / Geschlecht 2. KJ
Fundort
Fundumstände Rupfung
Funddatum 22.01.2017
coll. 411t
erstellt: 10.12.2018

Anmerkungen

einige Handschwingen zusammenhängend. In der Rupfung waren außerdem ein Stück Flügelknochen und eine einzelne Feder eines Basstölpels zu finden.

Artbestimmung

Zuerst als Heringsmöwe bestimmt, jedoch ist der Vogel deutlich zu hell gefärbt. Die Federmaße befinden sich im unteren Variationsbereich der Silbermöwe

Altersbestimmung

Gleichmäßig gefärbte Handschwingen ohne Anzeichen eines Apikalflecks, Steuerfedern klar gebändert, Jugendkleid im zweiten Jahr (1. Winter)

Messwerte

Längste Handschwinge H9=301,0mm
kleines Individuum
13% des maximalen Variationsbereichs
294,0mm
350,0mm
Längste Armschwinge A1=159,0mm
Längste Steuerfeder S5=171,5mm
kleines Individuum
23% des maximalen Variationsbereichs
162,0mm
203,5mm
Alle Werte


H10 294.0mm
H9 301.0mm
H8 291.5mm
H7 273.5mm
H6 257.0mm
H5 238.0mm
H4 219.5mm
H2 188.0mm
H1 174.5mm
A1 159.0mm
S1 166.0mm
S2 167.0mm
S3 169.0mm
S4 171.0mm
S5 171.5mm
S6 171.0mm