Kojonup Given the extensive parrot damage recorded in this region many of these people were highly motivated to trap. This provided the opportunity to test if a trapping program could have a regional effect on parrot abundance and damage. Shooting of parrots also continued in this area as it had done in the past. These monitoring sites rarely coincided with trapping sites as most trapping sites were located near farm houses or sheds. The monitoring sites would therefore only be expected to pick up a reduction in parrot abundance and damage if such a reduction had occurred consistently throughout the 160,000 ha area.
Parrot damage can vary from year to year.
Shooting, but no trapping, occurred within control areas. However, this was about 2.5 to 3.3 times greater than the estimate for the pre-trial year. Extent of parrot damage observed The extent of parrot browsing damage in grass tree and river red gum sites was widespread and very variable throughout both the trapping and control areas. Factors such as marri flowering and rainfall events appeared to decrease parrot damage rates. Changes in parrot abundance and parrot damage were observed during the trial.