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Variation in Migration Distance Does not Affect Arrival Date in the Subsequent Breeding Season of Dutch Barn Swallows Hirundo rustica

Jouke F. Altenburg, Auteur ; Bennie van den Brink, Auteur ; Raymond H.G. Klaassen, Auteur ; Mark P. Collier, Auteur ; Henk P. van der Jeugd, Auteur ; Janske van de Crommenacker, Auteur ; Peter van Horssen, Auteur

Dans Ardea (113(1) September, 2025)

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Great Snipes in sub-Saharan Africa: seasonal patterns of abundance, moult and body mass in relation to age and sex

Edouard J.M. Debayle, Auteur ; Michel Devort, Auteur ; Raymond H.G. Klaassen, Auteur ; Åke Lindström, Auteur

Dans Wader Study (124(3) December, 2017)

Great Snipes Gallinago media spend about eight months per year in sub-Saharan Africa, but most aspects of their non-breeding ecology are poorly known. We analysed the seasonal pattern of appearance, flight feather moult (primaries and secondarie[...]

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Primary moult in non-breeding second-calendar-year Swifts Apus apus during summer in Europe

Joop Jukema, Auteur ; Henk van de Wetering, Auteur ; Raymond H.G. Klaassen, Auteur

Dans Ringing & Migration (30(1) janvier 2, 2015)

Little is known about the extent of primary moult in non-breeding second-calendar-year Swifts during summer in Europe. A sample of 352 Swifts of this age group was captured during May–July in a village in the Netherlands. Primary moult was almos[...]

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