Black-tailed gull / Japanmöwe (Larus crassirostris)
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Wikipedia: Black-tailed gull Source: WIKIPEDIA 1200px-Laridae_in_Beijing_Zoo.JPG
Observations
🔍 No documented observationDescription
Classification: Genus Larus (Larus); Subfamily Larinae (Larinae); Family Gulls (Laridae)vagrant