Birds from the book: Die Einsamkeit der Seevögel

Tips to identify these birds.
Information isn't adequate to describe these birds: Great black-backed gull, Common murre, Northern fulmar, Black guillemot, Great cormorant, Razorbill, Black-legged kittiwake, Parasitic jaeger, Common eider, Thick-billed guillemot
Common gull / Sturmmöwe (Larus canus)
Fantasievolle Sturmmöwe Zuerichsee, Postkarte vom Teddys Souvenir Shop, Limmatquai, Zuerich. 2021-09-11 12.00.00
Near Badi Auslikon at the Pfäffikersee. I thought I had only seen black-headed gulls, but on reviewing my photos, I noticed the yellow bill. Other typical characteristics: it's bigger than the black-headed gull next to it, it doesn't have the Charlie Brown half-ring around the eye, it has less gray and only a few shorter black tail feathers. 2021-02-05 11.34.30 Pfäffikersee Profile
Great black-backed gull / Mantelmöwe (Larus marinus)
Great black-backed gull (Mantelmöwe), Islay near Bridgend. 2023-08-11 09.31.48 Islay Profile
Common murre / Trottellumme (Uria aalge)
Wikipedia: Common murre Source: OTHER 1200px-Guillemots_on_Bear_Island_Svalbard_Arctic_%2819659642914%29.jpg Profile
Northern fulmar / Eissturmvogel (Fulmarus glacialis)
Wikipedia: Northern fulmar Source: OTHER Fulmarus_glacialis_Cornwall_UK.jpg Profile
Black guillemot / Gryllteiste (Cepphus grylle)
Wikipedia: Black guillemot Source: OTHER Tystie1.jpg Profile
Great cormorant / Kormoran (Phalacrocorax carbo)
Cormorant Brissago. 2020-10-20 17.46.43 Brissago
Cormorant Cormorants' feathers lack the waterproofing that ducks have, so you often see them drying their wings on a convenient perch. 2021-01-26 15.56.30 Pfäffikersee Profile
Razorbill / Tordalk (Alca torda)
Wikipedia: Razorbill Source: OTHER 1200px-Alca_torda_Caithness%2C_Scotland.jpg Profile
Black-legged kittiwake / Dreizehenmöwe (Rissa tridactyla)
Wikipedia: Black-legged kittiwake Source: OTHER 1200px-Rissa_tridactyla_%28Vard%C3%B8%2C_2012%29.jpg Profile
Parasitic jaeger / Schmarotzerraubmöwe (Stercorarius parasiticus)
Our guide raises his arm, which results in the Arctic Skua keeping a safe distance. 2015-06-10 15.13.04 Iceland Profile
Common eider / Eiderente (Somateria mollissima)
Eiderente. 2023-10-13 12.38.44 New England
Eiderente, vom Steg aus gesehen in Rapperswil. 2021-02-12 13.42.20 Rapperswil
Drei Eiderenten, eins davon weiblich, bei Rapperswil. 2021-02-12 13.32.58 Rapperswil Profile
Thick-billed guillemot / Dickschnabellumme (Uria lomvia)
Wikipedia: Thick-billed guillemot Source: OTHER Uria_lomvia1.jpg Profile