The Mirning were, according to measurements made of old people from a remnant of the tribe in 1939, relatively short in stature and practice rites of
circumcision and
subincision. The Jirkala-mirning were first contacted by whites in 1872, when their numbers were estimated to be 30, consisting of 11 men, 8 women, 5 adolescents, and 6 children. It was estimated by the first whites who settled in Wonunda-mirnung territory in 1877 that they numbered no more than 80 persons, 15 men, 15 women, 10 adolescents, and some 40 children. Writing in 1931,
A. P. Elkin stated: 'The Wanbiri-speaking tribe, referred to as the Yerkla-mining (that is, the men at Yerkla or Irgala) is now extinct.' ==Social organisation==