Three species of endemic wild black cockatoos (Carnaby’s cockatoos (Calyptorhynchus latirostris), Baudin’s cockatoos (C. baudinii) and forest red-tailed black cockatoos (C. banksii naso)) are treated and rehabilitated for release through a program at the Perth Zoo Veterinary Department and Kaarakin Black Cockatoo Conservation Centre. The majority of admitted cockatoos have been injured by vehicle strike, but other presentations include raven attack injuries, gunshot injuries and a paralysis syndrome. Measuring the success of this program is important for enhancing veterinary treatment and rehabilitation practices, as well as optimising resource allocation and animal welfare. According to the IUCN/SSC guidelines, rehabilitation is not included in the definition of conservation translocation, but we would consider this study to be of significance due to the numbers of otherwise healthy individuals that are returned to populations and have been found to re-flock and become reproductively active. In this study, post-release success was defined as flock integration one month following release and was assessed using tracking data collected using satellite and GPS telemetry combined with on-ground observations. Thirty-four variables were analysed for their effect on rehabilitation success in 119 black cockatoos, including injury type and time spent in captivity and with conspecific groups prior to release. The findings of this study are important for the ongoing refinement of the program which in turn significantly contributes to conservation efforts for these species.