1972: In The Dyirbal Language of North Queensland, Robert Dixon identified four grammatical genders. The first gender included men, the moon, storms, rainbows, boomerangs, kangaroos and possums. Women were in the second gender, lumped together with the sun and stars, bandicoots, platypuses, most birds (since birds were the spirits of dead women) and hairy mary grubs. Trees with edible fruit formed the third gender, and the fourth consisted of parts of the body, the wind, digging sticks, bees and honey, noises, grass, mud and stones.
Source: R.M.W. Dixon, The Dyirbal Language of North Queensland (1972), pp. 306–11