January 2014 Mute Swans. After a period with mild weather in the low areas and at the lake, the previous ice covering most of the lake has vanished, and now also some swans are back. Weather is predicted to have temperatures below freezing point in a few days so ice will probably be seen at the surface again. At the lake Østensjøvannet nature reserve in Oslo. January 5 2014. D3200, Sigma DG 70-300.