Observatør Terje Gregersen
Spring phenology 2011-04-17 Terje Gregersen tun og foringsbrett (Buskerud, Norway) | 2011-04-09 Arrival white wagtail 2011-04-06 Flowering colt's-foot 2011-04-12 Flowering wood anemone 2011-04-17 Leaves unrolling downy birch 2011-04-12 Adult bumble-bee 2011-04-03 Adult small tortoiseshell |