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 Ueno Zoo

Emu
Dromaius novaehollandiae

It is the second largest living bird in the world after the ostrich. It has black feathers from its head to its neck, and some individuals have pale skin visible. Its body is brown to gray-brown in color. Its wings are very small and degenerate. It lives alone or in pairs, but can also form flocks of 4 to 9 individuals. It is polyandrous, with females laying 5 to 15 dark green eggs weighing 450 to 650 grams, and the males incubate the eggs and care for the chicks.

classification	Class Aves, Order Cassowaries, Emu Emu
English name	Emu
distribution	Australian continent
Residence	Various regions, from forests to grasslands, inland to coastal
Size	Total length: 150-190cm Weight: 30-55 kg
food	Seeds, fruits, shoots, grasses, insects
Red List	IUCN: LC (Least Concern)

Ueno Zoo exhibition area

Ueno Zoo /Children's Zoo Step

cry

Males and females have different calls. Females generally make a booming, drum-like sound, while males make a low, grunting sound. When they call, their throats expand.

feather

Unlike other birds, Emu have two pairs of feathers.

feet

While most birds have four toes, Emu have three.

Island extinction

Emu population on the Australian mainland is currently very large and stable. However, Emu that once inhabited Kawakawa, Kangaroo Island, and King Island became extinct after the arrival of European settlers in the 19th century.

Return to Livng Things Encyclopedia