La Tour du Valat

Article

Moulting Black Swans Cygnus atratus at Lake IJsselmeer, Netherlands

Klaas van Dijk, Auteur

Dans Limosa (71(2) 1998)

Lake Ijsselmeer is a shallow freshwater lake of 2000 km2 with large summer concentrations of moulting nonbreeding Mute Swans Cygnus olor. Since at least 1978, non-breeding Black Swans are also present during summer. Five Black Swans that were ca[...]

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Black-headed Gull of 33 years and re-appeal to stop using aluminium rings to mark gulls

Klaas van Dijk, Auteur ; Date Lutterop, Auteur ; Rob Voeste, Auteur ; Frank Majoor, Auteur

Dans Dutch Birding (36(4) 2014)

Recently, van Dijk et al (2012) presented an overview with three longevity records of Black- headed Gull Chroicocephalus ridibundus. The oldest individual was a bird with ring Arnhem 3.275. 396, ringed near Zandvoort, Noord-Holland, the Netherla[...]

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New longevity records of Black-headed Gull, with comments on wear and loss of aluminium rings

Klaas van Dijk, Auteur ; René Oosterhuis, Auteur ; Benny Middendorp, Auteur ; Frank Majoor, Auteur

Dans Dutch Birding (34(1) 2012)

21 food to an open area near the colony; see Middendorp (2009) for details. On that day, BM saw a ringed adult with an unfamiliar ring number and he could read the inscription (Arnhem 3.275. 396) with his telescope. BM observed the bird at Benth[...]

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Article

Notes on the foraging behaviour of Eurasian Oystercatchers Haematopus ostralegus feeding on bread

Klaas van Dijk, Auteur

Dans Wader Study Group Bulletin (121(1) 2014)

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Article

Taimyr Gulls: evidence for Pacific winter range, with notes on morphology and breeding

Klaas van Dijk, Auteur ; Sergei Kharitonov, Auteur ; Holmer Vonk, Auteur ; Bart Ebbinge, Auteur

Dans Dutch Birding (33(1) 2011)

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