A flock of Chickadees and Tits in the middle of the mountains right in the middle of Germany in hazy weather with low-lying clouds combined with drizzle, chilly wind from the west might contain white-headed Long-tailed Tits, which are normally immediately counted as Aegithalos caudatus caudatus.
The Long-tailed Tit (Aegithalos caudatus) exhibits complex global variation with 19 subspecies recognized. The can be divided into three groups: the caudatus group in northern Europe and Asia. The europaeus group in southern and western Europe, north-east China, and Japan. The alpinus group is confined to Mediterranean Europe and south-west Asia.
The subspecies caudatus of the Long-tailed Tit (Aegithalos caudatus) breeds in Fenno-Scandinavia, Eastern Europe, the largest part of the former Soviet Union, parts of China and Japan, North and South Korea and Mongolia. Since the appearance of the relevant parts of field guides in european languages, this subspecies is located more westernly and southernly than indicated before. Long-tailed Tits are resident or non-migratory bird species with an invasive occurrence in some years, often finding vast numbers in the Baltic countries and in Northwest Europe.
Several subspecies of the Long-tailed Tits occur in the southern and western parts of the area of subspecies caudatus. These subspecies belong to the so-called alpinus / europaeus assemblage. The distribution area of europaeus extends northwestern to Belgium, Continue reading Long-tailed Tit ssp. caudatus in Germany