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 local population

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 local population

Creatures at Tama Zoo

Tundra Bean Goose
Anser fabalis

They are dark brown overall with an orange band on the tip of their beak. Breeding begins in May or June, when they build a nest made of down and grass in a depression in the ground and lay 4 to 6 eggs. Nests are usually built at a height that will not be submerged even in floods. After breeding, they undergo molting, and after molting is complete, they leave their breeding grounds around early September and arrive at their wintering grounds between late September and October.

classification	Aves, Anseriformes, Anatidae
English name	Tundra Bean Goose
distribution	Breeding location: Northern Eurasia Wintering areas: East Asia, Kazakhstan, Europe
Residence	Breeding season: Lakes, marshes, and rivers in the taiga and tundra Wintering period: grassland, farmland, wetland
Size	全長：66～89cm 翼開長：142～175cm 体重：3.2～3.9kg
food	Grass blades, stems, roots, seeds, aquatic plants, grains
Red List	IUCN: LC (Least Concern) Japan: NT (Near Threatened) Tokyo: EX (Extinct)

Tama Zoo exhibition area

Tama Zoo and Asian Zone

How to distinguish between Greylag Goose, Greater White-fronted Goose, and Lesser White-fronted Goose

Tundra Bean Goose has a black beak and does not have the black spots on its abdomen that are seen in Greater White-fronted Goose and Lesser White-fronted Goose.

Danger in the wild

Due to increased hunting, their population declined in the mid-1900s, along with that of other species such as the white-Greater White-fronted Goose that migrate to Japan. In order to conserve these geese, which have long been beloved by the Japanese people, they were designated a national natural monument in 1971. Since the 1970s, their population has gradually increased, and as of around 2020, there are approximately 10,000 birds wintering in Japan.

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