Zoo Stock Species and the Red List
Zoo Stock Species and the Red List
Zoo Stock
This indicates that the species is included in the Second Zoo Stock Plan, which was formulated by the Tokyo Metropolitan Government in 2018. The plan sets goals for the next 10 years in three areas: "species conservation," "contribution to wildlife conservation," and "environmental education and conservation awareness." 124 animal species are included.
What is the Red List?
Based on scientific research, this is a list of wildlife classified by rank (category) indicating the degree of risk of extinction.
Livng Things Encyclopedia shows the categories (mainland and islands) assessed by the IUCN (International Union for Conservation of Nature) at the global level, the Ministry of the Environment for Japan, and the Tokyo Metropolitan Government for Tokyo.
The higher the category in each table, the higher the risk of extinction, and CR, EN, and VU are the three categories known as "endangered species." In Tokyo, species that are not at the NT (near threatened) level but are relatively rare are considered "species of concern."
|
IUCN categories |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
— |
|
CR |
Serious crisis |
|
EN |
crisis |
|
VU |
emergency |
|
NT |
Near Threatened |
|
LC・○ |
Low Concern |
|
DD |
Data shortage |
|
LP |
— |
|
Japan (Ministry of the Environment) Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
— |
|
DD |
Lack of information |
|
LP |
Endangered |
|
Tokyo Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
Unranked |
|
DD |
Lack of information |
|
LP |
Endangered |
Creatures at Ueno Zoo
Creatures at Ueno Zoo
Bewick's Swan
Cygnus columbianus bewickii
Bewick's Swan
Cygnus columbianus bewickii
They breed in the Arctic Circle and migrate to temperate regions of Asia in the fall to spend the winter. They form large flocks of hundreds to thousands of birds at their wintering grounds. At their breeding grounds, they build nests made of high piles of earth on elevated ground. They are herbivorous, and in addition to eating plants near water, they can also float on the water's surface and stretch their long necks downward to eat grass on the bottom. In winter, they also eat agricultural grains.
| classification | Aves, Anseriformes, Anatidae |
|---|---|
| English name | Bewick's Swan |
| distribution | Breeding location: Tundra in northern Eurasia Wintering areas: Europe, the Caspian Sea region, Korea, eastern China, and Japan |
| Residence | Grasslands, wetlands |
| Size |
Total length: 120-150cm
Weight: 4.3kg - 9.6kg |
| food | grass, aquatic plants |
| Red List |
IUCN: LC (Least Concern)
|