what animals r extinct? are passenger pigeons really extinct? If posible bakc up ur answer with a website link

Question

Sorry! I mean tendangered! Endangered! but r passenger pigeons extinct? Also, what did the do? ride trains or something?

By endangered i don't care what i mean i just mena endangered! w/eva! I need some real answers bison... complete the list! i will fail science if i dont find out!

Answer 1

Hi,
The standard categories for endangered species are set by an international organization called IUCN, the World Conservation Union. The UICN categorizes species into categories according to their level of extinction danger, on the basis of several criteria. The UICN issues a Red List that includes all the endangered species, so it's the best place to search for the information you need.
IUCN site:
http://iucn.org

Some background information, including the definition of the categories:
http://www.iucn.org/themes/ssc/redlists/background_EN.htm

And here's the actual Red List:
http://www.redlist.org/

With respect to passenger pigeons, yes, the species (called Ectopistes migratorius) went extinct in the wild in 1900, and the last captive animal died in 1914.
Source:
http://www.redlist.org/search/details.php?species=7031&tab=summ

Answer 2

Where to start?
Yes Passenger Pigeons are considered extinct, as are Great Auks and, as another answer stated, the majority of things that have ever lived on this planet.
I have heard a variety of scientific definitions for extinct, generally setting a time frame (e.g. if the species is not observed in the wild for 20 years, it is assumed extinct). Endangered simply means the species has a high probablility of going extinct.
Endangered and Extinct in the United States are also legal terms defined by the Endangered Species Act (ESA). Species (and, sub-species) may be listed under the act.
Internationally, the International Union for the Conservation of Nature lists species of concern.
Very wordy, but I hope you find it helpful.

Answer 3

Just to add to Calimecita's excellent answer:

The 2006 IUCN redlist lists about 16,000 species as being threatened worldwide, so putting a list of those species here would not be possible. There are over 1000 species of threatened mammals alone.

http://www.redlist.org/info/tables/table1

The IUCN has a number of different categories into which it classifies each organism it evaluates.

Least Concern is those organisms that are not threatened or thriving (i.e. Canada goose, humans, moose and rock dove)

Near Threatened and Vulnerable includes those organisms that have the potential to become endangered (either through low numbers, geographic isolation, or living in a very specific habitat), but are not endangered at the present time.

Endangered and Critically Endangered are those organisms that are in very real danger of going extinct. Often this is due to habitat loss. Poaching and other human activities often make the situation worse.

Extinct in the Wild means that there are no organisms of that type left outside of captive breeding programs. These include such species as the Hawaiian crow, wild horse, Saudi gazelle, and black footed ferret.

Extinct means that there are no organisms of that type left anywhere in the world, captive or otherwise. These include the passenger pigeon, Carolina parakeet, quagga, Malagasy hippo, Caribbean monk seal, great auk, Labrador duck, the dodo and the Tasmanian wolf.

Answer 4

more species are extinct than are alive

that means lots and lots of species

of course, there have been species declared extinct and then years later, discovered still living

"endangered" needs to be specifically defined before you could get agreement on what living species are now endangered

wikipedia has a good article http://en.wikipedia.org/wiki/Passenger_Pigeon

Answer 5

Yes, passenger pigeons are really extinct. The last wild one died in March 1900, and the last domesticated one died in September 1, 1914.

Answer 6

i could say the Proterosuchus, an early, Crocodile-like Archosauriform from the early Triassic era that replace into pertaining to to later Archosaurs at the same time with Euparkaria, Crurotarsans, Pterodactyls, Dinosaurs, and Birds.

Answer 7

Have you seen any around?

http://en.wikipedia.org/wiki/Passenger_Pigeon