Mildred Dunnock of roles in Broadway productions during the 1930s, Dunnock won praise for her performance as a Welsh school teacher in "The Corn is Green" in 1940. The 1945 film version marked her screen debut. During the 1940s she performed mainly on stage, in such dramas as "Another Part of the Forest" (1946) and "Death of a Salesman" (1949) and in the musical "Lute Song" (1946). In 1947, Dunnock became a founding member of the Actors Studio. Dunnock reprised her "Salesman" role in the 1951 film version. She originated the role of Big Mama in the Tennessee Williams' "Cat on a
Common blackbird dark Places about it", and it symbolised resignation in the 17th century tragic play "The Duchess of Malfi"; an alternate connotation is vigilance, the bird's clear cry warning of danger. The common blackbird is the national bird of Sweden, which has a breeding population of 1–2 million pairs, and was featured on a 30 öre Christmas postage stamp in 1970; it has also featured on a number of other stamps issued by European and Asian countries, including a 1966 4d British stamp and a 1998 Irish 30p stamp. This bird—arguably—also gives rise to the Serbian name for Kosovo, which is