Which of these species is not extinct?

The Komodo dragon is not extinct, unlike the other species listed. The Tasmanian tiger, also known as the thylacine, is extinct and was last seen in the wild in the 1930s. The passenger pigeon became extinct in the early 20th century due to hunting and habitat loss. The Carolina parakeet was declared extinct in 1939. These species are no longer found in the wild, while the Komodo dragon, a large reptile native to Indonesia, still exists and can be found in their natural habitats.