Japanese Night-Heron

Gorsachius goisagi

Order

PELECANIFORMES

Family

Bitterns, Herons and Egrets (Ardeidae)

Code 4

Non-AOU

Code 6

GORGOI

ITIS

ILLUSTRATION

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PHOTOS

CONSERVATION STATUS

Endangered

The Japanese Night-Heron has a small breeding range of around 35,800 square kilometers. It only breeds in heavily forested areas with streams and other wetlands in southern Japan and at least one island off the coast of South Korea. This rare species mostly winters in the Philippines but has also occurred as a vagrant to Brunei and Palau. The global population of the Japanese Night-Heron is believed to be anywhere from just 1,000 to 2,500 individuals, and is decreasing. For this reason, it has been given a conservation rating of Endangered by the IUCN.

SUMMARY

Overview

Japanese Night-Heron: Small, stocky heron with red-brown head and neck, yellow-olive around eye, brown back and wings, white throat, gray underparts, thick brown streaks on throat and underparts. Short dark bill with yellow-olive base. Broad wings with thick black stripe. Sexes similar. Juvenile is similar to adult with more brown on head and neck..

 

Range and Habitat

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Japanese Night-Heron SONGS AND CALLS

Similar Sounding


Voice Text

"buo buo", "bwoo bwoo bwoo"

INTERESTING FACTS

  • Common until the 1970s, Japanese Night-Herons are threatened by deforestation and introduced Siberian Weasels in their breeding range. It is estimated that there are fewer than 1000 mature individuals today.
  • They are primarily nocturnal or crepuscular, but they occasionally feed during the day when the weather is overcast.
  • This species was first described by Dutch zoologist C. Temminck in 1835 or 1836.
  • A group of herons has many collective nouns, including a "battery", "hedge", "pose", "rookery", and "scattering" of herons."

SIMILAR BIRDS

RANGE MAP PALAU

About this Palau Map

This map shows how this species is distributed across the Palau islands.

FAMILY DESCRIPTION

TERMINOLOGY

CREDITS

Artist

Michael Oberhofer

HELP ME IDENTIFY A BIRD

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UnderpartsX

Belly, undertail coverts, chest, flanks, and foreneck.

PlumesX
Large, conspicuous, showy feathers.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X