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
Greater White-fronted Goose
Anser albifrons
Greater White-fronted Goose
Anser albifrons
Their bodies are dark brown overall, with orange legs. Their beaks are orange to pink and white at the base. Breeding begins in late May to June. They form pairs or loose flocks, building shallow nests on the ground made of down, feathers and plants, and laying 5 to 6 eggs.
| classification | Aves, Anseriformes, Anatidae |
|---|---|
| English name | Greater White-fronted Goose |
| distribution | Breeding locations: Northern Eurasia, northern North America, northern Canada, western Greenland Wintering areas: Europe, southwestern United States, around Mexico, Japan, Korea, southern China |
| Residence | Breeding season: Tundra near lakes and ponds, inland near the coast Wintering period: grassland, farmland, wetland |
| Size |
全長：65～86cm
翼開長：130～165cm 体重：1.7～3.0kg |
| food | Grass blades, stems, roots, seeds |
| Red List |
IUCN: LC (Least Concern)
Tokyo: EX (Extinct) |
How to distinguish between Greylag Goose, Tundra Bean Goose, and Lesser White-fronted Goose
Greater White-fronted Greater White-fronted Goose have black spots on their abdomens and a white area at the base of their beaks. However, these patterns are not present in young birds. Adult Greater White-fronted Lesser White-fronted Goose also have black spots on their abdomens and a white area at the base of Greater White-fronted Goose, but they are slightly larger and do not have a yellow eye ring. The black spots vary from bird to bird.
Danger in the wild
Like Tundra Bean Goose such as the Bean Goose, which have migrated to Japan since ancient times, their populations have rapidly declined due to increased hunting and wetland development since the Meiji period. As a result, hunting was banned in 1971 and they were designated a national natural monument. Currently, their populations have recovered.