| Titre : | Occurrences of Gray's Grasshopper Warbler in Europe, including a further case of Meinertzhagen fraud |
| Auteurs : | Peter R. Kennerley, Auteur ; Robert P. Prys-Jones, Auteur |
| Type de document : | Article |
| Dans : | British Birds (99(10) OCT 2006) |
| Article en page(s) : | 506-516 |
| Résumé : | Gray's Grasshopper Warbler Locustella fasciolato has been recorded in western Europe on just three occasions; in each case, the bird struck a lighthouse and the specimen has been preserved. Two records, on Ile d'Ouessant, France, on 26th September 1913, and at Lodbjerg, Denmark, on 25th September 1955, involved first-winter birds and fall within the established pattern of autumn vagrancy by Asian passerines. The third, an adult, was supposedly obtained by Richard Meinertzhagen from Ile d'Ouessant on 17th September 1933. This specimen was subsequently reidentified and the record published in BWP as referring to a juvenile of the insular form L. f. amnicolo. However, subsequent examination of plumage characters and biometrics has clearly established that it belongs with the nominate form rather than L. f amnicola. Being in fresh plumage, this specimen could not have been collected in September, and external and X-ray examination has revealed that the style of preparation closely matches that of a series collected by Owston in northeast China in June 1908, one of which was missing from the collection at the Natural History Museum, Tring. It is concluded that the Meinertzhagen bird is the missing Owston specimen, which was removed from the NHM collection, extensively remade and relabelled with misleading information. Consequently, this specimen should no longer be considered to represent a genuine vagrant to Europe, or quoted in support of the occurrence of other extreme vagrants to Europe that originate in eastern Asia. |
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