This is a major site in their northerly migration towards Dalarna County in Sweden where our birds were re-introduced many years ago and now breed.
With weather still being cold with northerly winds reported by Simon Rix in Oslo our birds are staying in and around the river Glomma as can be seen from the map below.
Keep up to date with Simons daily exploits in and around Oslo (oslobirder.blogspot.co.uk). You will not be disappointed with his daily wanderings and excellent shots of the species he reports on.