Urmas (birdmap info)
When he arrived in Africa, the connection with Karl II disappeared, as it does every autumn. But at the beginning of March 2023, Karl II started flying towards Estonia from his wintering place (from the border of the Central African Republic and DRC). Karl II made a migration stop over on April 1 due to rainy weather, but the rain turned to snow on April 4, and according to the forecast, the snow will not melt until a week later. The north is free of snow, but Karl II probably doesn't know that.

Snow cover in 5-04-2023 (ventusky.com)