Cranes have existed for 60 million years.
They and their relatives the limpkins and trumpeters are
fairly closely related members of the order, Gruiformes
that also includes rails, gallinules, coots, and other
marsh-adapted birds. The skeletal anatomy and external
features of a Crane has some similarities with large number
of differences with limpkins and trumpeters. The sex of a
Crane cannot be distinguished visually by researchers
because there is no difference in morphology between male
...