SPIERENBURG P & VAN DER SPEK V Waves of Goldcrests Regulus regulus: an analysis of the 2015 influx [samenvatting] [summary] [pdf only for members]
VAN DER SPEK V, SCHAAP L & EHRENBURG A Thirty years of breeding bird censuses in the Amsterdam Water Supply Dunes [samenvatting] [summary] [pdf only for members]
TEIXEIRA R & SURMINSKI P Calls of Tawny Owls Strix aluco provide insight in census criteria [samenvatting] [summary] [pdf only for members]
TULP I & KLEEFSTRA R Andermans Veren [samenvatting] [summary] [pdf only for members]
POLWIJK F, KLEEFSTRA R, VAN WINDEN E & ENS BJ Monitoring of sources of interference and disturbances as part of high tide roost counts in the Dutch Wadden Sea [samenvatting] [summary] [pdf only for members]
NOU-congress 2019 [samenvatting] [summary] [free pdf]
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