We have donated Golden Eagle—to support a reintroduction trial into the wild.

news
May 19, 2026

Tama Zoo is pleased to announce that it has transferred Golden Eagle (Japanese Japanese Golden Eagle subspecies) to the "Minamisanriku Region Golden Eagle Habitat Restoration Project Council," which has been certified by the Ministry of the Environment as part of its Golden Eagle protection and breeding project, for experimental release. If this project succeeds in reintroducing Golden Eagle eagles into the wild, it will be the first such initiative in Japan.

Transferred Golden Eagle

Number of birds

1羽

sex

female

age

57 days old (as of the transfer date)

Hatching date

Friday, March 20, 2026

Transfer date

Saturday, May 16, 2026

Golden Eagle that was transferred to another family (Photo taken: May 3, 2026)

background

Since our first successful breeding of Golden Eagle in 1998, our zoo has continued to breed them for generations, contributing to the maintenance of captive populations in Japan for approximately 30 years. In November 2025, following a decision by the Japanese Association of Zoos and Aquariums Association of Zoos and Aquariums' Biodiversity Committee's Japanese Golden Eagle Project Promotion Council, we will transfer Golden Eagle to the "Minamisanriku Region Golden Eagle Eagle Habitat Restoration Project Council" (*1) for experimental release, and cooperate in habitat conservation activities.

This project will be carried out using "hacking techniques" (*2) already established in Europe and elsewhere, and since it is necessary to use young birds before they fledge, three pairs were prepared in three breeding cages within the park for the breeding season from winter 2025 to the following spring. From surveillance camera footage, it was confirmed that one of the pairs laid an egg on February 7th. The pair subsequently laid another egg, but only one hatched on March 20th. Footage also showed the parents feeding the chick mouth-to-mouth, and on May 6th, the chick was able to forage for food brought by its parents on its own, confirming that it was growing well. Therefore, on May 16th, this individual was transferred to the council.

Currently, the council is training the bird to acclimate it to the wild in a hacking hut located in the mountains of the Minamisanriku region, and plans to release it when it is ready to fledge.

※1
In the Minamisanriku region of Miyagi Prefecture, a public-private partnership is working on a plan to restore an environment where Golden Eagle can thrive, and the Japan Nature Conservation Society is one of its members.
※2
This method involves raising young birds before they fledge in a facility called a "hacking hut," feeding them with wild animals such as hares and Copper Pheasant to acclimate them to the surrounding environment. Then, the hut doors are gradually opened, and the young birds are trained in a semi-wild environment until they acquire the ability to hunt small animals on their own.
Animal care at Tama Zoo
(As of May 19, 2026)

14 birds (10 males, 4 females, 0 unknown)
*This does not include the young bird that was transferred this time.

Domestic breeding situation
(As of December 31, 2025)

11 facilities, 45 birds (27 males, 17 females, 1 unknown)
Source: Japanese Golden Eagle Domestic Pedigree Registry [Japanese Association of Zoos and Aquariums]