Wren 1

During a long stretch of the twentieth century the widespread, Holarctic, (Winter) Wren was considered to be one species comprising various forms, collectively named Troglodytes troglodytes. An extensive species, it was divided into subgenera (such as Anorthura and Olbiorchilus) to deal with the diversity, demoted to subspecies rank since. (Anorthura = cocked tail bird – … Read more Wren 1