Bushka has developed his art practice over decades, first learning to paint by observing his Elders in Brewarrina, in the north-west region of New South Wales. Bushka is deeply motivated by a responsibility to keep cultural knowledge alive, and through his artworks, explores his ancestral connections to Brewarrina and the history of aqua-culture associated with the area. Stories about Byamee, the Baranbinja creation spirit and hunting and gathering practices are also vibrantly expressed.

Bushka has work held in the collection of the Victorian Ombudsman and Deakin University.