A common crane can stretch up to 130 cm long, yet its wings span nearly two metres. It weighs between 3 kg and 6.1 kg, with the typical adult around 5.4 kg, while the eastern form averages 4.6 kg. Its wing chord measures 50.7-60.8 cm, the tarsus 20.1-25.2 cm and the exposed culmen 9.5-11.6 cm, giving it a sleek, powerful silhouette for long flights.
A pair of common cranes defends a territory that can be as tiny as 2 ha or as vast as 500 ha (4.9-1 235.5 acres), showing huge flexibility. In Sweden, their nest spreads about 90 cm across, built near shallow water and dense reeds. They usually lay two eggs, occasionally one, and rarely three or four. Incubation lasts roughly 30 days, mostly by the female, after which the chicks can run within a day and swim shortly thereafter.
Successful breeders live about 12 years on average, though some individuals reach 30-40 years and the recorded maximum is 43 years in captivity. Breeders tend to live longer than non-breeders, highlighting the fitness advantage of successful nesting. However, the species is highly vulnerable to avian influenza; autumn 2025 saw over 18 000 deaths in Germany and between 15 000 and 20 000 in France, underscoring disease as a major mortality factor.
The world now hosts roughly 500 000 common cranes, with the bulk nesting in Russia, Finland (30-40 000 pairs in 2009) and Sweden (about 30 000 pairs in 2012). European numbers are rebounding: Germany grew from 700 pairs in 1978 to over 10 000 pairs by 2017, and France, after a long absence, recorded more than 20 breeding pairs in 2017. Denmark's comeback is dramatic, from fewer than five pairs before the 1990s to at least 750 pairs in 2022.
When common cranes head south, they line up in a classic "V" formation. They can soar as high as 10 000 m (33 000 ft), rivaling only the Ruppell's vulture for altitude.
Sources
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As the Common Crane rises from the misty wetlands, its stately form unfolds, a symphony of movement and sound that has captivated the hearts of observers for centuries. With deliberate, loping strides, it moves through the landscape, its long neck bobbing up and down as it searches for the tender shoots and insects that sustain it, a gentle giant in a world of whispering reeds and shimmering water. In its majestic, unhurried dance, the Common Crane embodies a timeless, unassuming elegance, a reminder of the beauty that still thrives in the hidden corners of our world.
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