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Cuculus optatus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES CUCULIFORMES CUCULIDAE

Scientific Name: Cuculus optatus
Species Authority: Gould, 1845
Common Name/s:
English – Oriental Cuckoo
Taxonomic Notes: Cuculus saturatus (Sibley and Monroe 1990, 1993) has been split into C. saturatus, C. optatus and C. lepidus following Payne (2005).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Assessor/s: BirdLife International
Reviewer/s: Butchart, S. & Symes, A.
Contributor/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 appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, 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.
History:
2009 – Least Concern
2008 – Least Concern
2007 – Least Concern
2004 – Not Recognized
2000 – Not Recognized
1994 – Not Recognized
1988 – Not Recognized

Geographic Range [top]

Range Description: This species has an extremely large range, breeding from Finland in the west to Japan and northern Siberia in the East. During winter, birds occur throughout Indonesia, the Philippines, Papua New Guinea and in northern and eastern Australia.
Countries:
Native:
Australia; Cambodia; China; Finland; Indonesia; Japan; Kazakhstan; Korea, Democratic People's Republic of; Korea, Republic of; Kyrgyzstan; Lao People's Democratic Republic; Malaysia; Micronesia, Federated States of; Mongolia; Myanmar; New Zealand; Palau; Papua New Guinea; Philippines; Russian Federation; Russian Federation; Solomon Islands; Taiwan, Province of China; Tajikistan; Thailand; Viet Nam
Vagrant:
United States
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population size has not been quantified, though in Europe, the breeding population is estimated to number 250,000-500,000 breeding pairs, equating to 750,000-1,500,000 individuals (BirdLife International 2004), with Europe forming <5% of the global range. 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 and c.1,000-10,000 individuals on migration in Taiwan; c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Korea; c.100-100,000 breeding pairs and c.50-10,000 individuals on migration in Japan and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Russia (Brazil 2009).
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: The species lives in a range of forest types.
Systems: Terrestrial
Citation: BirdLife International 2012. Cuculus optatus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 24 May 2013.
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