• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
Christidis, L. and Boles, W.E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
Christidis, L.; Boles, W. E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
Cramp, S. and Perrins, C.M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
Cramp, S.; Perrins, C. M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

Population justification: The European population is estimated at 1,290,000-2,120,000 calling or lekking males, which equates to 2,590,000-4,240,000 mature individuals (including 1-1.5 million pairs in European Russia) (BirdLife International 2015). This is marginally higher than the last European population estimate of 1.3-2 million breeding pairs (BirdLife International 2004) and higher than the 1.1-1.8 million pairs previously estimated by Schäffer and Mammen (1999). A further 515,000-1,240,000 pairs are estimated for Asiatic Russia, yielding a global total of 3,600,000-6,700,000 mature individuals. Given the high level of uncertainty in some of the breeding estimates and the apparent scarcity of the species in its non-breeding areas in sub-Saharan Africa, the total population may fall at the lower end of this range; even in the low millions.

Trend justification: Ongoing monitoring since 2002 in Russia (which holds the vast majority of the global population) indicates that numbers have remained stable or are even increasing, with some fluctuations due to extreme weather (A. Mischenko in litt. 2010). Whilst it is difficult to accurately predict future trends owing to the species's extensive range and differing climatic and agricultural conditions in different regions, it is thought that populations in key parts of the range in Russia and Kazakhstan are unlikely to change dramatically in the near future. Its conservation status remains unfavourable in some parts of its range with declines reported in several range countries (BirdLife International Corncrake Conservation Team 2015) although the overall European population trend was recently estimated as stable (BirdLife International 2015). Land-use changes are precautionarily predicted to drive a future decline of 1-19% in the forthcoming three generation (11 year) period.

Recommended citation
BirdLife International (2021) Species factsheet: Crex crex. Downloaded from http://www.birdlife.org on 17/04/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/04/2021.