Despite contributing to the ongoing collapse of native mammal populations across northern Australian savannas, we have limited understanding of the ecological constraints of feral cat population density in this system. This study investigated cat density across Melville and Bathurst Islands, two large islands in Australia’s monsoon tropics, and demonstrated large variation in cat density between these adjacent islands. Management that enhances understorey vegetation density, through feral herbivore control, as well as fire management, could help mitigate the impact of feral cats.

We aimed to improve camera trap performance for wildlife detection. Swift 3C wide-angle camera traps increased detections by >100% when compared with Reconyx PC900/HC600 camera traps. The Swift’s wider detection angle and increased sensor sensitivity contributed to these results. Periodically repositioning cameras within sites did not improve detections except for some species.

This study investigates the distribution, abundance and foraging ecology of Caspian Terns during 5 months of their non-breeding season in the Ramsar-listed Peel-Harvey Estuary, south-western Australia. Direct observation was used to identify important foraging areas and a night roost site between October 2018 and March 2019. These preliminary investigations highlight the importance of this estuarine system for feeding and roosting Caspian Terns during non-breeding periods and provide baseline information for further research of this tern population and towards evaluating their use as bioindicators of Peel-Harvey Estuary.

We report here results from the first trial conservation translocation of the endangered mallee emu-wren. Releases were structured within an adaptive experimental framework allowing key management insights to be gained, despite the reintroduced population not persisting. Spring releases should be prioritised for future releases.

Whale sharks, echeneids (remoras and sharksuckers) and a parasitic or commensal copepod share a unique three-way symbiosis. We explore these associations in a unique location in the Maldives and provide photographs and video to help unravel these relationships.