Japanese Paradise-flycatcher
Encyclopedia
The Japanese Paradise-flycatcher (Terpsiphone atrocaudata), also called the Black Paradise-flycatcher, is a medium-sized passerine
Passerine
A passerine is a bird of the order Passeriformes, which includes more than half of all bird species. Sometimes known as perching birds or, less accurately, as songbirds, the passerines form one of the most diverse terrestrial vertebrate orders: with over 5,000 identified species, it has roughly...

 bird
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...

. It was previously classified with the Old World flycatcher
Old World flycatcher
The Old World flycatcher family Muscicapidae is a large family of small passerine birds mostly restricted to the Old World. These are mainly small arboreal insectivores, many of which, as the name implies, take their prey on the wing.-Characteristics:...

 family Muscicapidae, but the paradise-flycatchers, monarch flycatchers and Australasian fantails
Fantail
Fantails are small insectivorous birds of southern Asia and Australasia belonging to the genus Rhipidura in the family Rhipiduridae...

 are now normally grouped with the drongo
Drongo
The drongos are a family of small passerine birds of the Old World tropics, the Dicruridae. This family was sometimes much enlarged to include a number of largely Australasian groups, such as the Australasian fantails, monarchs and paradise flycatchers...

s in the family Dicruridae, which has most of its members in Australasia
Australasia
Australasia is a region of Oceania comprising Australia, New Zealand, the island of New Guinea, and neighbouring islands in the Pacific Ocean. The term was coined by Charles de Brosses in Histoire des navigations aux terres australes...

 and tropical southern Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

.

The Japanese Paradise-flycatcher is mainly migratory and breeds in shady mature deciduous or evergreen broadleaf forest of Japan (southern Honshū, Shikoku, Kyushu and the Nansei Shoto islands), South Korea, Taiwan (including Lanyu island) and the far north Philippines. It is a non-breeding visitor to mainland China, Hong Kong, Thailand, Laos, Vietnam, Philippines, Malaysia, Singapore, and Sumatra, Indonesia.

Habitat: In Jeju-do
Jeju-do
Jeju-do is the only special autonomous province of South Korea, situated on and coterminous with the country's largest island. Jeju-do lies in the Korea Strait, southwest of Jeollanam-do Province, of which it was a part before it became a separate province in 1946...

 of South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

, Gotjawal forest
Gotjawal Forest
Gotjawal Forest is a naturally formed forest located on the middle slopes of Halla Mountain, Jeju Island in South Korea. It covers the rocky area of ʻaʻā on Jeju Island off the southwestern coast of South Korea. Due to the geographical feature, the region remains largely undisturbed by people...

, a forest formed on a rocky area of volcanic AA Lava, is one of the important breeding sites of Japanese Paradise-flycatcher

There are three subspecies, the nominate T. a. atrocaudata which breeds through most of Japanese/Korean range, T. a. illex which is resident in the Ryukyu Islands, and T. a. periophthalmica restricted to Lanyu Island off southeast Taiwan.

The Japanese Paradise-flycatcher is similar in appearance to the Asian Paradise Flycatcher
Asian Paradise Flycatcher
The Asian Paradise-flycatcher is a medium-sized passerine bird native to Asia. Males have elongated central tail feathers, and in some populations a black and rufous plumage while others have white plumage. Females are short-tailed with rufous wings and a black head...

but slightly smaller. Mature males have a black hood with a purplish-blue gloss which shades into blackish-grey on the chest. The underparts are off-white to white. The mantle, back, wings and rump are plain dark chestnut. The tail has extremely long black central feathers, which are shorter in immature males. Unlike the Asian Paradise Flycatcher there is no white morph. The female resembles the male but is duller and darker brown on the chestnut areas. It has black legs and feet, a large black eye with a blue eye-ring, and a short blue bill.

The song is rendered in Japanese as tsuki-hi-hoshi, hoi-hoi-hoi, which translates to Moon-Sun-Stars and gives the Japanese name of the bird サンコウチョウ (三光鳥) sanōchō (literally, bird of three lights, i.e. moon, sun, star, from san three + lights + chō bird).

A recent survey detected a steep decline in part of the Japanese breeding population which has presumably occurred because of forest loss and degradation in its winter range.
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