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Corncrake

Crex crex

Corncrake
Corncrake (c) Lorne Gill/NatureScot

Key facts

  • Gaelic name: Traon
  • Length: 27 – 30cm | Wingspan: 46 – 53cm | Weight: 120 – 200g
  • When in Scotland: April – September
  • UK Conservation status: Red
  • Species on the Edge areas:  Argyll and the Inner Hebrides

Species information

 

How to identify

The corncrake is a member of the rail family, related to coots and moorhens. Corncrakes have yelllowish-brown plumage with darker streaks on the back, and grey patches on the throat and above the eye. They are slightly larger than a blackbird. Corncrakes have a distinctive breeding call – a raspy rattle – which is given mostly at night, sometimes unrelenting for hours. Listen (Credit: Mathias Ritschard xeno-canto )


Life cycle

Female corncrakes look after the eggs and chicks alone. Although they cannot fly until they’re around 35 days old, the female will often abandon her first brood at 12 days old, so she can start another nest. Corncrakes make an annual migration of over 10,000 miles to winter in central and southern Africa.


Distribution 

Corncrakes are now largely restricted to a small number of island and coastal strongholds in Scotland and Ireland. Breeding corncrakes are now mostly restricted to the western and northern islands of Scotland. They are summer visitors, wintering in central and southern Africa.

 

A map displaying the distribution of corncrake in the UK.

Corncrake UK distribution map (c) RSPB www.rspb.org.uk/birds-and-wildlife/corncrake

 


Habitat and feeding

Corncrakes breed and nest in tall plant cover such as meadows or silage fields. They are a secretive bird; it is more usual to hear the males calling than to see them. 

They feed mainly on insects, snails, slugs, worms and seeds.


Conservation status

UK Conservation Status: Red


Threats

Corncrake are ground-nesting birds and like to nest in long vegetation including silage fields. Previously farmers would conduct one cut in late summer. Modern farming techniques mean that farmers are able to take multiple cuts of hay and silage, moving from just one cut in August to an early cut in June, and another in August. This early cut in June is when the corncrake are raising their first brood and often the eggs and chicks don’t survive this first cut. 

What Species on the Edge is doing

 
 
  • Providing additional early cover areas for corncrake in the Inner Hebrides
  • Engaging with landowners and farmers to encourage management for corncrake, including corncrake-friendly mowing

Gallery

Corncrake (c) Lorne Gill / NatureScot
A male corncrake (crex crex) calling in the Uist machair. ©Lorne Gill/NatureScot. For information on reproduction rights contact the Nature Scot Image Library on Tel. 01738 444177 or www.nature.scot
Corncrake
Corncrake (c) Lorne Gill/NatureScot
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