Most people in Britain call them a Wren, some call them a Jenny Wren. As a bird photographer I captioned the photo below as a Winter Wren when it was taken in the 1990s. The photo was taken in Cheshire, England and at the time the bird was classified as the same species as the Winter Wren found in North America.
However, since researchers started analysing the DNA of species it has been reclassified. In Europe and Asia the bird is now called the Eurasian Wren. The North American Winter Wren has been split into two species, the Winter Wren that can be found in eastern North America and the Pacific Wren found along the Pacific coast of North America. As a result, the North American species also have new scientific names.
So to the photo, a Winter, sorry Eurasian Wren singing to proclaim it’s territory in the spring. Ah, spring, it’s -11°C with a wind chill of -17 as I type this.