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 Tama Zoo
Creatures at Tama Zoo
Common Shelduck
Tadorna tadorna
Common Shelduck
Tadorna tadorna
Its head and neck are shiny black with a green tint. It has a brown band on its chest and black patterns on the tips of its wings, but the rest of its body is mainly white. Its beak and feet are red. Breeding begins in April or May. It builds nests made of grass, moss, and feathers in tree hollows or rabbit burrows and lays 8 to 10 eggs.
| classification | Aves, Anseriformes, Anatidae |
|---|---|
| English name | Common Shelduck |
| distribution | Breeding area: Europe, central Eurasia Wintering location: Southern Europe Resident bird habitats: Europe |
| Residence | Coasts, tidal flats, estuaries |
| Size |
Total length: 61-63cm
Weight: 800-1,450g |
| food | Aquatic invertebrates, algae, small fish |
| Red List |
IUCN: LC (Least Concern)
Japan: DD (insufficient information) |
Beak and food
Its upward-curving beak is adapted to finding and eating food in the mud of tidal flats.
Beak and Gender
Males have a bump at the base of their beak that grows larger especially during the breeding season.