Wobbly Blue MarbleThe planet, explained for curious children.

Animal · Russia, Finland, Sweden

Common crane

Grus grus — the name this animal has in the language scientists everywhere share.

The common crane is a tall grey bird with a small red patch on its head and a loud trumpeting call that carries for kilometres. Cranes cross Europe in long V-shaped lines and gather in their thousands at the same resting lakes each year.

Where does the common crane live?

Home: in bogs, reed beds and wet forests.

In the wild it lives in these countries: Russia, Finland, Sweden, Estonia, Germany, Poland, Spain, France.

Conservation status from the IUCN: not in danger.

The short profile

Fully grown: about 100–130 cm tall. It weighs about 5 kilograms. On the menu: both plants and meat.

The story behind it

Common cranes nest on the ground in wet bogs, reed beds and swampy forest, often on a small island of plants with water all around, so that a fox cannot reach the eggs. A pair usually raises two chicks, which can walk and swim within a day or two of hatching. Cranes eat both plants and animals: roots, seeds, berries and grain, along with insects, snails and worms. In spring they dance, leaping into the air with half-open wings, bowing and tossing bits of grass about, and a pair often stays together for many years. Their trumpeting call is made in a windpipe that is extra long and coiled inside the breastbone, which is why it carries so far. In autumn tens of thousands gather at the same marshes and lakes in Germany, France, Hungary and Spain before moving further south. A crane flies with its neck stretched straight out, which is the easiest way to tell it from a heron.

Find it on the globe

Common crane is there as a tiny animated figure that breathes and looks around. From far away the planet is only a blue ball; detail arrives as you zoom in, and this one appears once you are close enough. Open it on the globe.

It sits at its real coordinates, not near them — the same numbers listed in the facts above. Switch off the layer for this kind of place and it disappears again; the buttons for that are down the right-hand edge.

Questions children ask

Why do cranes fly in a V?

Each bird flies a little behind and beside the one in front, in air that the wings ahead have set swirling upward. That makes the flight less tiring, and the bird at the point is swapped when it gets worn out.

Why do cranes dance?

Dancing helps a pair stay bonded and lets young birds practise before they ever have a partner. One bird bows and jumps, the other answers, and often a whole flock joins in until the marsh is full of leaping grey birds.

How is a crane different from a stork?

A crane is grey all over, with a bushy bunch of drooping feathers over its tail, while a white stork is white with black wings and bright red legs. In the air a crane calls loudly and often; storks fly almost in silence.

Where these numbers come from

Every figure on this page was checked against public reference sources before publication. Where sources genuinely disagree, the text says so.

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