The Siberian tit resembles the Marsh tit (Poecile palustris) and the Willow tit (Poecile montanus) in Sweden, but is slightly larger and is the one with the northernmost distribution. Incidentally, it is the only tit that occurs both in Europe, Asia and North America. Its largest distribution area is in Siberia, hence its name. It is thus an almost circumpolar species and in Sweden it occurs only in the mountain regions.