Volunteers will be out in western Victoria again this weekend for the annual red-tailed black cockatoo count.
Project coordinator Tim Burnard says the south-eastern species of the bird is considered endangered and the count helps conservation workers keep track of the population.
"The biggest thing will be whether it's rainy and windy because mostly we located the birds by their calls, so if the conditions are bad we'll get a low count in terms of population growth or not," he said.
"It's very unlikely the total population has moved from last year."