Reproduction: Crane builds its bulky nest on ground in marshy area. The same
nest may be used year after year for laying purpose. Cranes breed only once a
year. They are monogamous and mate for life. The female lays one to four (usually
two) olive grey spotted with brown eggs. The egg colour of a crowned crane,
however, is pale blue. Chicks hatch after a period of 28-36 days of incubation.
Both sexes share for incubation. The mottled red brown to greyish downy young
can run shortly after hatching. Both male and female share the responsibility of caring the young. They are able to fly at 70 day.
Behaviour: Cranes are migratory in nature. They are seen in large flocks during winter months. In flight, the neck is extended straight out in front. Cranes are also reputed for their remarkable courtship and group displays. Unlike storks and herons, cranes hardly perch on trees. Their loud and penetrating calls are more pronounced during migration. As mentioned earlier that cranes are monogamous and mate for life. Sometimes, cranes are found in agricultural fields causing considerable damages to the crops.
Life span: The longevity of cranes has been reported more than 50 years. There is a report that a Siberian white crane died at the Washington National Zoo at the age of 62 years.