rècord de longevitat de gavina d'hivern (Larus ridibundus)

[jordi muntaner]

Hola a tots,

S'ha vist un exemplar de gavina d'hivern (Larus ridibundus), anellat com a poll, que tenia 38 anys, 8 mesos i 24 dies, la qual cosa constitueix la datació més longeva obtinguda per a aquesta espècie. Copio més a baix el missatge original.

Salut,

Jordi



Dear all,

We have recently published a paper with some new longevity records of Black-headed Gull (Larus ridibundus). The world's oldest Black-headed Gull was seen (and also photographed!) for the last time on 21 March 2011, 32 years, 8 months and 24 days after it had been ringed as a chick.

Besides that, we discuss in this paper the consequences of the use of poor quality metal rings. We argue that aluminium rings should not be used anymore to mark Black-headed Gulls.

The paper can be downloaded for free from the website of Frank Majoor (www.frankmajoor.nl ), direct hyperlink
http://frankmajoor.nl/PDF/Black-headed_ ... e20-31.pdf

Best wishes,

Klaas van Dijk / Groningen / The Netherlands.