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 Inokashira Park Zoo
Creatures at Inokashira Park Zoo
Whooper Swan
Cygnus cygnus
Whooper Swan
Cygnus cygnus
This large waterbird has a wingspan of nearly 2.5m. It raises its young in the northern Eurasian continent in summer, and in autumn migrates to warmer parts of Europe and Asia, mainly Hokkaido and Tohoku in Japan. It feeds on grass seeds and stems in wetlands, and its long neck helps it eat underwater plants. Nests are built on land, with the female incubating the eggs. The chicks have inconspicuous grey feathers when they hatch, and leave the nest a few days after hatching to grow near water under the protection of their parents.
| classification | Aves, Anseriformes, Anatidae |
|---|---|
| English name | Whooper Swan |
| distribution | Japan, Asia, Europe, Arctic |
| Residence | Lakes, rivers, ponds, etc. |
| Size |
Total length: approx. 140cm
|
| food | Leaves, stems, and seeds of aquatic plants |
| Red List |
IUCN: LC (Least Concern)
|