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Ixobrychus sinensis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES CICONIIFORMES ARDEIDAE

Scientific Name: Ixobrychus sinensis
Species Authority: (Gmelin, 1789)
Common Name/s:
English Yellow Bittern
French Blongios de Chine

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/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 is very large, and hence does not 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; Guam; India; Indonesia; Japan; Korea, Democratic People's Republic of; Korea, Republic of; Lao People's Democratic Republic; Malaysia; Maldives; Micronesia, Federated States of ; Myanmar; Nepal; Northern Mariana Islands; Oman; Pakistan; Palau; Papua New Guinea; Philippines; Seychelles; Singapore; Solomon Islands; Sri Lanka; Taiwan, Province of China; Thailand; Timor-Leste; United States; Viet Nam
Vagrant:
Australia; Christmas Island; Yemen
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population is estimated to number c.100,000-1,000,000 individuals (Wetlands International 2006), while national population estimates include: c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in China; c.10,000-100,000 breeding pairs in Taiwan; c.100-100,000 breeding pairs and c.50-10,000 individuals on migration in Korea; c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Japan and < c.100,000 breeding pairs and < c.1,000 individuals on migration in Russia (Brazil 2009).
Population Trend: Unknown

Habitat and Ecology [top]

Systems: Terrestrial; Freshwater
Citation: BirdLife International 2012. Ixobrychus sinensis. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 18 April 2014.
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