SUMMARYSeton, D. H. C. 1973. Observations on breeding of the Great-billed Heron in northern Queensland. Emu 73: 9–11.Three breeding territories were located, in which up to seven nests were found. Any of the nests in a territory may be used from one year to the next, and one has been used recently, twenty years after being found. Two eggs seem to be the usual clutch, although probably only one young is reared. In the Burdekin district laying may begin about September and sometimes birds will lay as late as January. Comment is made on the unusual call.