Overview
The Corncrake (Crex crex), also known as the Landrail, is an iconic, secretive grassland bird of the rail family Rallidae. Famed for the loud, rhythmic, mechanical rasping ‘crex-crex’ song broadcast by males throughout summer nights, it has been immortalized in European folklore and agricultural poetry for centuries, symbolizing traditional rural hay meadows.
Biology and Physical Characteristics
Slightly smaller than a partridge, the Corncrake has buff-brown plumage extensively streaked with dark brown on the upperparts, grey cheeks, and a pale grey breast with warm chestnut-rufous bars along the flanks. Its broad, rounded wings display rich chestnut-red wing coverts in flight. It has a short, pinkish bill and strong, pale flesh-colored legs adapted for running through dense grass.
Behavior and Ecology
Extremely elusive, the Corncrake rarely takes flight, preferring to slip silently like a rodent through tall meadow grasses. During the breeding season, males vocalize incessantly from hidden perches from dusk until dawn, their penetrating rasp carrying up to a kilometer. Despite its clumsy, fluttering appearance on the breeding grounds, the Corncrake is a phenomenal long-distance nocturnal migrant that crosses the Mediterranean and Sahara twice annually.
Conservation and Human Impact
Currently listed as Least Concern globally due to extensive Siberian breeding populations, the Corncrake suffered severe historic declines in western Europe caused by early mechanized silage mowing that destroyed nests and chicks. Intensive conservation schemes featuring ‘corncrake-friendly’ mowing (mowing from center outwards to allow chicks to escape) have stabilized populations in Scotland and Ireland.
Interesting Factoid
The Corncrake’s scientific name ‘Crex crex’ is an onomatopoeia of the male’s nocturnal rasping call, which sounds exactly like running a thumbnail vigorously across the stiff teeth of an old plastic comb.