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Corvus frugilegus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PASSERIFORMES CORVIDAE

Scientific Name: Corvus frugilegus
Species Authority: Linnaeus, 1758
Common Name/s:
English – Rook

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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely 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.
History:
2009 – Least Concern
2008 – Least Concern
2004 – Least Concern

Geographic Range [top]

Countries:
Native:
Afghanistan; Albania; Austria; Azerbaijan; Belarus; Belgium; Bosnia and Herzegovina; Bulgaria; China; Croatia; Cyprus; Czech Republic; Denmark; Egypt; Estonia; Faroe Islands; Finland; France; Germany; Greece; Hungary; Iran, Islamic Republic of; Iraq; Ireland; Israel; Italy; Japan; Kazakhstan; Korea, Democratic People's Republic of; Korea, Republic of; Kyrgyzstan; Latvia; Liechtenstein; Lithuania; Luxembourg; Macedonia, the former Yugoslav Republic of; Moldova; Mongolia; Montenegro; Netherlands; Norway; Poland; Portugal; Romania; Russian Federation; Russian Federation; Russian Federation; Serbia (Serbia); Slovakia; Slovenia; Spain; Sweden; Switzerland; Syrian Arab Republic; Tajikistan; Turkey; Turkmenistan; Ukraine; United Kingdom; Uzbekistan
Introduced:
New Zealand
Vagrant:
Algeria; Greenland; Iceland; Jordan; Kuwait; Lebanon; Malta; Taiwan, Province of China
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: In Europe, the breeding population is estimated to number 10,000,000-18,000,000 breeding pairs, equating to 30,000,000-54,000,000 individuals (BirdLife International 2004). Europe forms 25-49% of the global range, so a very preliminary estimate of the global population size is 61,200,000-216,000,000 individuals, although further validation of this estimate is needed. National population sizes have been estimated at c.100-10,000 breeding pairs and c.50-1,000 wintering individuals in China and c.100-10,000 breeding pairs in Russia (Brazil 2009).
Population Trend: Decreasing

Habitat and Ecology [top]

Systems: Terrestrial

Bibliography [top]

BirdLife International. 2004. Birds in Europe: population estimates, trends and conservation status. BirdLife International, Cambridge, U.K.

Brazil, M. 2009. Birds of East Asia: eastern China, Taiwan, Korea, Japan, eastern Russia. Christopher Helm, London.

IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: http://www.iucnredlist.org. (Accessed: 19 June 2012).

Sokolov, L. V.; Gordienko, N. S. 2008. Has recent climate warming affected the dates of bird arrival to the Il'men Reserve in the Southern Urals? Russian Journal of Ecology 39: 56-62.

Vahatalo, A. V.; Rainio, K.; Lehikoinen, A.; Lehikoinen, E. 2004. Spring arrival of birds depends on the North Atlantic Oscillation. Journal of Avian Biology 35: 210-216.
Citation: BirdLife International 2012. Corvus frugilegus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 22 May 2013.
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