Cranes are a clade (Gruidae) of large, long-legged and long-necked birds in the group Gruiformes. There are fifteen species of crane in four genera. Unlike the similar-looking but unrelated herons, cranes fly with necks outstretched, not pulled back. Cranes live on all continents except Antarctica and South America.
Most species of cranes are at the least classified as threatened, if not critically endangered, within their range. The plight of the Whooping Cranes of North America inspired some of the first US legislation to protect endangered species.
They are opportunistic feeders that change their diet according to the season and their own nutrient requirements. They eat a range of items from suitably sized small rodents, fish, amphibians, and insects, to grain, berries, and plants.
Cranes construct platform nests in shallow water, and typically lay two eggs at a time. Both parents help to rear the young, which remain with them until the next breeding season.
Some species and populations of cranes migrate over long distances; others do not migrate at all. Cranes are solitary during the breeding season, occurring in pairs, but during the non-breeding season they are gregarious, forming large flocks where their numbers are sufficient.
The Memphis Zoo, located in MidtownMemphis, Tennessee, is home to more than 3,500 animals representing over 500 different species. Created in April 1906, the zoo has been a major tenant of Overton Park for more than 100 years. The land currently designated to the Memphis Zoo was defined by the Overton Park master plan in 1988, it is owned by the City of Memphis. The zoo is set on 76 acres (31 ha), of which approximately 55 acres (22 ha) are developed.
In 2008, the Memphis Zoo was ranked "#1 Zoo in the U.S." by TripAdvisor.com. The ranking was based on visitor opinions.
Since the early 1990s, the Memphis Zoo has invested over $77 million for renovation and expansion. The zoo's animal inhabitants reside in three zones with 19 exhibits, such as Teton Trek, Northwest Passage and China, home to Giant Pandas Ya Ya and Le Le
The Memphis Zoo is an accredited member of the Association of Zoos and Aquariums (AZA).