The last fluent speakers of Yidiny were Tilly Fuller, George Davis, Dick Moses and his sister Idea Burnett of White Rock. A substantial part of the language has been analysed and recorded by Robert M. W. Dixon.
Country
The Yidiny lands were in lowland rainforest areas, stretching from Yarrabah down to the south, where their borders met those of the Ngajanji and the Wanyurr. To their north were the coastal Djabugay people. In Norman Tindale's calculation, the Yidiny tribal lands were estimated to cover some. These included the areas of Deeral north to Gordonvale and Cairns. Their inland extension ran as far as Lake Barrine. Their eastern boundary was on the crest of the Prior Range.
Social organization
The Yidiny were composed of several Clans, of which some names survive:-
Gimuy
Walubara
Maiara
Maimbi
Djumbandji
History
The Yidiny, along with many other tribal people in the tropical rainforest areas from Cairns to Ingham, and the Atherton Tableland were cleared off their land to enable the establishment of cattle stations and sugar cane plantations. Jack Kane participated in some massacres as a youth and recalled, in 1938 one episode alone in 1884, during a week-long campaign to round up the tribes, Queensland police and native troopers, encircled a Yidiny camp at what became known as Skull Pocket, several miles north of Yungaburra. At dawn, a shot was fired from one side into the camp to make them scatter, and then as they rushed into the ambushing forces elsewhere, were shot down. The native police then stabbed or smashed the brains of the children. One group of the Yidiny, broke off from the rest of the tribe in the early period of settlement, and after shifting to the area of the present-day Redlynch asserted a distinctive identity by calling themselves the Djumbandji. This segment took over a part of Buluwai territory. Starting around 1910, even those who remained in the area of white settlement were the object of a Queensland government policy of shifting them into the Anglican mission at Yarrabah on the Cape Grafton peninsula. As each tribe was weakened by dispersal and fragmentation, the elders formed a counter-plan in the 1920s to organise themselves into a more viable political unit, in the shape of a macro-tribe, but the merger failed to take hold, given the notable linguistic differences between groups.