An endangered species is a species that is in the risk of becoming extinct. Therefore, conservation measures must be taken to protect the species. Most species are endangered as a result of human activity.

Threats can be considered at several levels. When looking at the problems threatening the survival of a species globally, the probability of the species disappearing altogether is considered. Extinction, by definition, is when all individuals of a given species die. Such an event is irreversible.

Another common way is to consider the numbers of species in a particular country International Union for Conservation of Nature’s Red List of Threatened Species, or Red List in short, has seven levels of conservation: least concern, near threatened, vulnerable, endangered, critically endangered, extinct in the wild, and extinct.

The long-tailed duck is one of our endangered bird species.