What makes the blue duck endangered?

* Habitat loss and degradation: The blue duck's habitat is threatened by several human activities, including deforestation, water pollution, and the introduction of invasive species.

* Hunting and predation: Blue ducks are hunted for their meat and feathers, and they are also preyed upon by introduced predators such as stoats and rats.

* Disease: Blue ducks are susceptible to a number of diseases, including avian cholera and pox.

* Climate change: Climate change is also a threat to the blue duck, as it is causing changes in the bird's habitat and food supply.