Extinct Species: Definition and Identification

A species that is no longer found in its specific area of habitation, even after conducting a thorough and prolonged search, is classified as an extinct species.

Understanding Species Status

• Extinct: This term applies when there is no reasonable doubt that the last individual of the species has died. Extensive searches in known and presumed habitats have failed to record a single individual.
• Vulnerable: Species facing a high risk of endangerment in the wild. They are not yet critically endangered but are likely to become so.
• Rare: Species with small populations that are at risk of becoming endangered. They may not necessarily be declining but exist in low numbers.
• Endangered: Species facing a very high risk of extinction in the wild. Their survival is unlikely without significant conservation efforts.

Based on the definition provided in the question – 'cannot be found after a prolonged search in its area of habitation' – the correct classification is extinct.