Chroicocephalus ridibundus

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IOC Classification: DomainEukaryota • RegnumAnimalia • PhylumChordata • SubphylumVertebrata • InfraphylumGnathostomata • SuperclassisTetrapoda • ClassisAves • SuperordoNeognathae • OrdoCharadriiformes • FamiliaLaridae • GenusChroicocephalus • Species: Chroicocephalus ridibundus (Linnaeus, 1766)
Wikispecies has an entry on:

IUCN: Larus ridibundus Linnaeus, 1766 (old web site) (Least Concern)

Adult summer (III - VII)[edit]

Head and swimming[edit]

Sitting[edit]

In flight[edit]

Fighting[edit]

Adult winter (VII - III)[edit]

Head[edit]

Swimming[edit]

Sitting[edit]

In flight[edit]

Nest, Chicks, Juvenile[edit]

Flocks[edit]

Sitting[edit]

In flight[edit]

Swimming[edit]

Videos[edit]

Black-headed gulls in winter plumage, New Danube, Vienna, January 2015
Black-headed gulls catching flying insects