Collared Flycatcher

Overview

The collared flycatcher (Ficedula albicollis) is a small passerine bird in the Old World flycatcher family, one of the four species of Western Palearctic black-and-white flycatchers. It breeds in southeast Europe (isolated populations are present in the islands of Gotland and Öland in the Baltic Sea, Sweden) and Eastern France to the Balkan Peninsula and Ukraine and is migratory, wintering in Sub-Saharan Africa. It is a rare vagrant in western Europe.
This is a 12–13.5 cm long bird.

Summary from Wikipedia, available under CC BY-SA 4.0.