We now have received an update from Tag5 and it shows in depth the migration flight path from near Oslo to Slamannan on 27/28th September 2024.
The map below shows the complete route, below is the detail it gave us. Total flight time was 21.5 hrs.The birds left a roost lake c30miles SW of Oslo at 0400 on the 27th.As tag5 neared to east coast it had been flying at 110kph but then dropped to 60-70 and always travelled just at wave height or up to 40m or so above. Came ashore at Whitby and then up country towards Keilder and then home to Fannyside Muir at 0130 on the 28th. There was a little pause at Burnhope Reservoir in Pennines for 30mins at 1900.