Dozens of dead native birds will be dumped outside Victorian Premier Daniel Andrews' office as debate heats up on the future of duck shooting.
In keeping with a long-running annual tradition, the Coalition Against Duck Shooting will on Tuesday display recovered birds who were shot and killed following the opening of the shooting season.
Campaign director Laurie Levy said about 100 birds will be laid out, including illegally shot, protected and threatened species.
The demonstration has its origins in 1986 when Victorian politicians refused to join rescuers on the wetlands to see the sanctioned "carnage", Mr Levy previously said.
He likened those days to the "Wild West" as shooters fired at everything that moved with little to no regulation.
Eight members of a parliamentary inquiry into duck shooting converged on the game reserve near Geelong on Wednesday to observe the opening of the shorter five-week season with strict bag limits.
The committee has already received 1700 submissions and is due to publish its final report by August 31.
Victoria, South Australia and Tasmania are the only states where duck shooting is permitted after Western Australia, NSW and Queensland banned the practice.
The demonstration is set to coincide with controversial reforms to overhaul Victoria Police's use of police informants returning to the upper house this week.
The Andrews government agreed to put the Human Source Management Bill on ice in March after draft changes to raise the threshold for police to use lawyers as informants weren't enough to quell the Greens' concerns.
Attorney-General Jaclyn Symes said Labor planned to bring the bill, which stems from the Lawyer X royal commission, back before the upper house during the first sitting week of May.
Another bill to make the North Richmond supervised injecting room permanent will also face upper house scrutiny but Greens and opposition amendments are likely to fail without government support.