Siberian stonechat (Vitgumpad buskskvätta) south of Södertälje, Sweden 3/3 [2021-12-02] 

Siberian stonechat (Vitgumpad buskskvätta) south of Södertälje, Sweden. A 1st calander year old male. I cannot rule out the possibility of it being a Stejneger's stonechat (Amurbuskskvätta), Saxicola stejnegeri, but the large buffwhite rump and black "armpit" under the wing, together with other birders assesment strongly favors this being a Siberian stonechat.