- The tallest bird in North America, the Whooping Crane was once at the brink of extinction. It is making a steady recovery thanks to intensive management efforts in Canada and the United States, and as of December 2004, 468 Whooping Cranes existed in the wild and in captivity.
- The population of Whooping Cranes has been rising steadily, at about four percent per year. The population reached 100 in 1987, about 250 in early 1995, and 468 by the end of 2004, with 213 in the wild.
