1. Himalayan Quail
The Himalayan Quail was last reported in 1876 and that's why its more endangered than the Ivory-billed Wooodpecker.
2. Javan Lapwing
The Javan Lapwing hasn't been seen since 1940.
3. Pink-headed Duck
The Pink-headed Duck hasn't been seen since 1950.
4. Slender-billed Curlew
The Slender-billed Curlew may have been extinct around when the Great Auk became extinct in 1852. But there have been some recent sightings?
5. Crested Shelduck
There haven't been sightings since 1964.
6. New Caledonian Rail
There hasn't been a confirmed sighting since 1890. But there have unconfirmed sightings from the 1960's to 1984.
7. Ivory Billed Woodpecker
The Ivory-Billed Woodpecker was probably extinct in the mid 1980's but recent sightings suggest that it might still exist.
8. Little Earth Hutia
The Little Earth Hutia was last seen in 1978 when scientists collected 43 specimens/
The Baiji or the Chinese River Dolphin became functionally extinct in 2006, but in 2007 one man claims he saw a Baiji swimming in the Yellow River.
10. Dwarf Hutia
Dwarf hutias haven't been seen since 1937. If there are any left there are less than 250.
The Po'ouli became possibly extinct when a male died in 2004 but people unsure if it still survives.
12. Cozumel Thrasher
In 2005 when Hurricane Emily and Hurricane Wilma hit nobody had found any left. Boa constrictors were introduced in 1971 and probably made a major impact on the Cozumel Thrasher's existence.
The Kouprey is possibly extinct but their might be fewer then 50 left.
14. Turquoise-throated Puffleg
The Turquoise-Throated Puffleg hasn't had a population count since the 19th century.
15. New Zealand greater short-tailed bat
The New Zealand greater short-tailed bat is possibly extinct.
16. Night Parrot
Even though the Night Parrot is endangered, there hasn't been a confirmed sighting since 1979 but John Young got a video of one early this year.
17. Jamaica Petrel
Individuals haven't been reported since 1879.
18. New Guinea big-eared bat
The New Guinea big-eared bat is possibly extinct in Papua New Guinea.
19. Ethiopian Amphibious Rat
The Ethiopian Amphibious Rat is only known by one specimen and probably extinct.
20. Sir David's Long-Beaked Echidna
The Sir David 's Long-beaked Echidna has unknown population but in no doubt that the population is very low. The echidna is threatened by habitat loss.
21. Okinawa Spiny Rat
In 2002 a wild specimen of a Spiny rat was found after thirty years. Their population is unknown.
22. Christmas Island Pipistrelle
In January 2009 there only four christmas island pipistrelles left.
The Saola was discovered in 1995 and people haven't seen them a lot so that's why people estimate that their are 6-15.
24. Hainan black crested Gibbon
In 2004 there were 19 gibbons left but a more recent count says that there are 22 Hainan gibbons left.
25. Eastern Black Crested Gibbon
The Eastern Black Crested Gibbon was extinct in the 1960's. But in 2002 a small population of just 37 Trùng Khánh District.
Note: This is a Northern white-cheeked gibbon
26. Short-Tailed Chinchilla
The Short-Tailed Chinchilla is very endangered and possibly extinct. The IUCN hasn't listed it has Extinct because there may be some populations in Chile.
27. Pacific Degu
The Pacific Degu has been caught since 1994. The population is extremely small.
28. Telefomin Cuscus
The Telefomin Cuscus hasn't been surveyed well and is only known from 6 specimens.
Not real colour of species
29. Javan Rhinoceros
The Javan Rhinoceros has a population of 40-60. Now it only lives in Ujong Kulon National Park.
30. Guadalupe Storm Petrel
The Guadeloupe storm petrel has a tiny population of less than 50.
31. Chinese Crested Tern
The Chinese Crested tern was extinct but rediscovered in 2000 when four pairs were found. The population now is 50.
32. Eastern long-beaked Echidna
The Eastern Long-beaked Echidna has an unknown population number.
33. New Zealand Storm Petrel
The New Zealand Storm Petrel became extinct in 1850 but then a colony was rediscovered in 2003.
34. Western Long-Beaked Echidna
35. Red Wolf
There are 50-150 red wolves left.
36. South China Tiger
The South China is critically endangered and possibly extinct in the wild. there are 70-90 in captivity.
37. Sao Tome Ibis
There are 70-400 Sao Tome ibises left.
38. Dusky Starfrontlet
The Dusky Starfrontlet was only known from museum specimens until 2004 when people discovered it. There are 75-374 left.
39. Sapphire-bellied Hummingbird
The Sapphire-Bellied Hummingbird has the same population as Dusky Starfrontlet.
40. Zapata Rail
The Zapata Rail has the same population as Dusky Starfrontlet.