KLEYHEEG E, DIRKEN S †, VAN BEUSEKOM R, EGGENHUIZEN T, JONKERS D, KOFFIJBERG K, MAJOOR F & NAGTEGAAL J Moulting Ruddy Shelducks Tadorna ferruginea in the Netherlands: numbers, origin and ecology [samenvatting] [summary] [pdf only for members]
ALTENBURG JF & BOUDEWIJN TJ Barn Swallow Hirundo rustica predation by Tawny Owl Strix aluco [samenvatting] [summary] [pdf only for members]
KLEEFSTRA R Going out on a moonlit night: nocturnal foraging by White-fronted Geese Anser albifrons and Barnacle Geese Branta leucopsis in relation to new and full moon [samenvatting] [summary] [pdf only for members]
OOSTERHUIS R Dramatic decline of Eurasian Tree Sparrow Passer montanus in Groningen, the Netherlands [samenvatting] [summary] [pdf only for members]
KLEEFSTRA R Andermans Veren [samenvatting] [summary] [pdf only for members]
VAN DEN BREMER L, VAN TURNHOUT C, PIERSMA T, NIENHUIS J & DE JONG A Breeding performance of Dutch House Martins Delichon urbicum [samenvatting] [summary] [pdf only for members]
Netherlands ornithological Union [samenvatting] [summary] [pdf only for members]
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