VAN MANEN W House Sparrow Passer domesticus and Tree Sparrow P. montana in the Netherlands, 42 years of monitoring
[samenvatting] [summary] [pdf only for members]

STRUCKER R.C.W. Changes in breeding bird numbers and habitats in the tidal freshwater zone along the river Oude Maas
[samenvatting] [summary] [pdf only for members]

HULSCHER JB, NIENHUIS J & VOSLAMBER B Accidental, voluntary or forced adoption by Greater Canada Goose Branta canadensis?
[samenvatting] [summary] [pdf only for members]

NIENHUIS J, HULSCHER JB & VOSLAMBER B A neck band as a distinguishing feature of recognition for a Greater Canada Goose Branta canadensis gosling by its family
[samenvatting] [summary] [pdf only for members]

SCHOPPERS J Magpies Pica pica nesting on buildings
[samenvatting] [summary] [pdf only for members]

POTTERS H Remarkable winter concentrations of Blue Tits Cyanistes caeruleus in Golden Larch Larix kaempferi plots
[samenvatting] [summary] [pdf only for members]

VAN ELS P, VAN WINDEN E, KLAASSEN O, SOLDAAT L & VAN TURNHOUT C A decade of national roost counts in the Netherlands
[samenvatting] [summary] [pdf only for members]

SPAANS AL In memoriam: Dr. C. Swennen (1929-2020) died
[samenvatting] [pdf only for members]