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 Inokashira Park Zoo

White-bellied Green-pigeon
Treron sieboldii sieboldii

In Japan, among the pigeons that live in the mountain forests from Hokkaido to Kyushu, females are olive-colored all over, while males have reddish-purple wings. They particularly enjoy fruit, but also eat nuts, seeds, and flowers. During the breeding season, which runs from May to September, they build shallow, dish-like nests in trees by interlacing branches, and the male and female work together to raise their young.

classification	Aves, Columbiformes, Pigeonidae
English name	White-bellied Green-pigeon
distribution	Japan, East Asia, Southeast Asia
Residence	forests and woods
Size	Total length: approx. 33cm
food	Fruits, seeds, flowers, etc.
Red List	IUCN: LC (Least Concern) Tokyo: NT (near threatened)

Inokashira Park Zoo Exhibition Area

Inokashira Park Zoo, Wild Bird Forest, and Japanese Bird House

Leaving the forest and heading to the sea in search of minerals

White-bellied Green-pigeon are known to visit coasts in flocks to drink seawater during the summer breeding season. Flying to the coast where they cannot hide puts them at risk of being attacked by predators such as Peregrine Falcon or swept away by waves, but it is thought that this is a way for them to make up for the minerals they lack in the summer when they eat a lot of fruit and seeds.

Eating fruit and growing forests

White-bellied Green-pigeon have a particular preference for fruit, and are known to eat a variety of forest fruits according to the season, such as wild cherry blossoms and brambles in the spring and dogwoods in the summer.Since many of the seeds from the eaten fruit are excreted in their droppings without being crushed, it is thought that White-bellied Green-pigeon play a role in transporting plant seeds to various distant places.

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