Map_thumbnail_large_font

Gorsachius melanolophus

Status_ne_offStatus_dd_offStatus_lc_onStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PELECANIFORMES ARDEIDAE

Scientific Name: Gorsachius melanolophus
Species Authority: (Raffles, 1822)
Common Name(s):
English Malay Night-heron, Malayan Night-Heron, Malayan Night Heron
Synonym(s):
Gorsachius melanophus melanophus Collar and Andrew (1988)

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ekstrom, J., Butchart, S.
Justification:
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size may be small, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Geographic Range [top]

Countries:
Native:
Bangladesh; Brunei Darussalam; Cambodia; China; India; Indonesia; Japan; Lao People's Democratic Republic; Malaysia; Myanmar; Nepal; Philippines; Singapore; Sri Lanka; Taiwan, Province of China; Thailand; Viet Nam
Vagrant:
Christmas Island; Palau
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population is estimated to number c.2,000-20,000 individuals (Wetlands International 2006), roughly equivalent to 1,300-13,000 mature individuals. National population sizes have been estimated at c.100-10,000 breeding pairs, c.50-1,000 individuals on migration and c.50-1,000 wintering individuals in Taiwan and c.100-10,000 breeding pairs in Japan (Brazil 2009).
Population Trend: Unknown

Habitat and Ecology [top]

Systems: Terrestrial; Freshwater

Citation: BirdLife International 2012. Gorsachius melanolophus. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 22 August 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided