Currently, there is absolutely no foreseeable reason for all birds to become extinct. There are around 10,000 known birds alive on Earth today, and we only know of about 4,500 mammals. So birds are quite successful. However, I do doubt that people, if they had existed 65.5 million years ago, could have predicted the extinction of the dinosaurs unless they would've seen the asteroid coming with a telescope.
none there extinct
Neither there both extinct
Extinct Birds - Rothschild book - was created in 1907.
The dodo has been extinct since the 17th century. Hence the phrase, 'dead as a dodo'.
The elephant birds and dodo birds both lived in the tropics, not anywhere near the North Pole. Elephant birds were native to the African island of Madagascar. Dodo birds lived on the Muaritius Islands, also off the coast of southern Africa.
Actually all of them are extinct. The birds related to the dodo birds are still alive. They died because of a natural equation on Earth.
1,200 birds are currently extinct
Yes. Sadly,they became extinct in the 17th century.
You cannot preserve something that is already extinct!
Being extinct, neither is common.
There are no dodo birds around now, they are extinct.
Both birds are now extinct.