Name three Australian animal species with their habitat, diet, behavior, conservation status, and efforts.

1. **Koala (Phascolarctos cinereus)**
- **Habitat & Diet**: Koalas are primarily found in eucalyptus forests along the eastern and southeastern coasts of Australia. They are herbivores, feeding almost exclusively on eucalyptus leaves, which are low in nutrients and require a specialized digestive system to process.
- **Behavior**: Koalas are mostly nocturnal and spend a significant amount of their time sleepingup to 18-22 hours a day) to conserve energy. They are solitary animals and have a home range that they mark with scent.
- **Conservation Status**: Koalas are classified as "Vulnerable" by the IUCN due to habitat loss, bushfires, and disease.
- **Conservation Efforts**: Various organizations are working to protect koala habitats through reforestation and land conservation initiatives. Additionally, there are programs aimed at monitoring and treating diseases like chlamydia in koala populations.

2. **Great Barrier Reef Turtle (Chelonia mydas)**
- **Habitat & Diet**: These turtles inhabit the warm coastal waters of the Great Barrier Reef and other tropical and subtropical regions. They are primarily herbivores, feeding on seagrasses and algae.
- **Behavior**: Green turtles are known for their long migrations between feeding grounds and nesting sites. They are generally solitary but can be seen in groups in feeding areas.
- **Conservation Status**: The species is classified as "Endangered" due to threats such as habitat loss, poaching, and climate change.
- **Conservation Efforts**: Conservation initiatives include protecting nesting sites, reducing bycatch in fishing, and promoting awareness about the importance of marine ecosystems.

3. **Western Ground Parrot (Pezoporus flaviventris)**
- **Habitat & Diet**: This critically endangered bird is found in the heathlands of southwestern Australia. It primarily feeds on seeds, fruits, and insects.
- **Behavior**: The Western Ground Parrot is known for its secretive nature and prefers to stay hidden in dense vegetation. It is mostly active during the day and is known for its distinctive calls.
- **Conservation Status**: The species is classified as "Critically Endangered" due to habitat destruction, predation by introduced species, and fire.
- **Conservation Efforts**: Conservation programs focus on habitat restoration, predator control, and breeding programs to increase population numbers. Efforts are also made to raise public awareness about the species' plight.