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

Brant Goose
Branta bernicla

Their bodies are generally brown, grayish to blackish brown, with a white collar-like pattern on their necks. Of all the geese found in Japan, they are the only ones that live on the coast. Their breeding season begins around June. They build nests made of grass, moss and feathers and lay 3 to 5 eggs. They often nest near Snowy Owl nests to avoid being attacked by arctic foxes.

classification	Aves, Anseriformes, Anatidae
English name	Brant Goose
distribution	Breeding season: Greenland, Russia, and the Arctic coasts of the United States and Canada Wintering season: Coasts of the UK, France, and Germany, China, Korea, Japan, and the west coast of the US
Residence	Breeding season: Tundra near the coast Wintering season: Coasts, tidal flats, lakes and marshes
Size	全長：55～56cm 翼開長：110～120cm 体重：1.2～2.3kg
food	Grass, moss, lichen, seaweed, seaweed
Red List	IUCN: LC (Least Concern) Japan: VU (Vulnerable)

Tama Zoo exhibition area

Tama Zoo and Asian Zone

Danger in the wild

There are approximately 500,000 brent geese living in the world, but the population in the Asia-Pacific region is said to be around 8,700, which is not a large number. Of these, around 2,500 are thought to overwinter in Japan. In order for Brant Goose to continue overwintering in the future, it is important to conserve Bell-ware beds, where there is an abundance Bell-ware for them to feed on.