Cranes are found on every continent with the exceptions of the Antarctic and South America, where they are found inhabiting the temperate wetlands and swamps throughout the Northern and Southern Hemispheres.
Despite its large size, the crane is an omnivorous bird meaning that it feeds on both plants and animals alike. Spending their lives close to water, cranes primarily feed on aquatic organisms including insects, fish and amphibians, along with a variety of plants including grains and tree bark.
Due to the sheer size of adult cranes, they have few natural predators within their native environment. Foxes, wildcats and large birds of prey including owls and eagles are the most common predators of the crane and mainly their chicks.
Cranes generally breed in the warmer summer months although the exact breeding season depends on the crane species. Female cranes construct large nests, generally in the trees, where they lay between 3 and 5 eggs. Once hatched the crane chicks are nursed by their parents until they are strong enough to fledge (fly away from the family nest).
Today, many of the 15 crane species are either considered to be vulnerable in the wild or critically endangered. The drastic decline of the world's crane populations is primarily due to habitat loss and pollution in their native environments.