The whooping crane is an endangered species that in 2000 reintroduction of whooping cranes to the eastern U.S. began. The purpose of the reintroduction was to establish a population of whooping cranes that breed in Wisconsin and migrate to the southeast for the winter.
The pallid sturgeon is also an endangered species of ray-finned fish, endemic to the waters of the Missouri and lower Mississippi River basins of the United States. Named for its pale coloration, the pallid sturgeon is closely related to the relatively common shovelnose sturgeon, but is much larger, averaging between 30 and 60 inches in length and 85 pounds in weight at maturity. The pallid sturgeon takes 15 years to mature and spawns infrequently, but can live for up to a century.
The pallid sturgeon is also an endangered species of ray-finned fish, endemic to the waters of the Missouri and lower Mississippi River basins of the United States. Named for its pale coloration, the pallid sturgeon is closely related to the relatively common shovelnose sturgeon, but is much larger, averaging between 30 and 60 inches in length and 85 pounds in weight at maturity. The pallid sturgeon takes 15 years to mature and spawns infrequently, but can live for up to a century.