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Whooping Crane | |
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Latin name: | Grus americana |
Taxonomic group: | Birds |
Risk category: | Endangered |
Range: | NT |
Year of designation: | 1978 |
Description:
Whooping Cranes are large white birds with a long neck, black wing tips, long black legs, and a red crown. Their large wings span about 2 m, and the bird stands more than 1.5 m tall. |
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Biology:
The breeding age of Whooping Cranes is not known, but it has been estimated that they begin breeding at 4 or 5 years of age. The nest is usually a flat-topped mound of vegetation in shallow water. A female usually lays two eggs per year, but she generally raises only one young. Whooping Cranes eat crustaceans, fish, small mammals, insects, roots, berries and grain. Whooping Cranes belong to the group of waterfowl and wading birds that learns to migrate from parent birds, travelling by day and apparently memorizing the landscape and picking up other clues. The family group typically remains together over the winter and flies back north in the spring. This poses problems for the captive breeding program, since cranes reared in captivity will have to be taught where to migrate to before they can be released, and then may not be able to survive the winter. |
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![]() In the nineteenth century, the Whooping Crane's breeding range extended from the Northwest Territories to central Iowa and Illinois. It wintered from Louisiana to northern Mexico. It is believed that the population of Whooping Cranes never exceeded 1500 birds; approximately 90% of this population disappeared between 1870 and 1900, and, by 1912, there were only 80 to 100 whooping cranes left. The population of whooping cranes increased from 49 birds in 1974 to 70 in 1977, due to conservation efforts. The slow increase in the population is partly due to the loss of birds which occurs during migration. The Canadian flock, which breeds on a 25 km by 25 km area in the Northwest Territories, winters in Texas, on the shore of the Gulf of Mexico. During migration, Whooping Cranes are found in northeastern and north-central Alberta, and in southwestern Manitoba, but they are most often seen in central and southeastern Saskatchewan.
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Habitat:
During the breeding season, Whooping Cranes inhabit marshy or swampy areas on the prairies and in aspen parkland. During migration, they are found in grainfields near sloughs or ponds. |
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Threats:
Human activities, such as hunting and development, threaten this species. The migration corridor is undergoing continuous industrial development, and Whooping Cranes collide with power lines and microwave towers. Oil and chemical pollution in the Gulf of Mexico could destroy wintering habitat. Weather conditions are also very important. During the breeding season, a drought or bad storm could destroy eggs and new-born chicks. The entire wintering flock could be wiped out by a hurricane. |
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Protection:
The Whooping Crane is protected in Canada under the federal Migratory Birds Convention Act of 1917, under Saskatchewan's Wildlife Act of 1997, and under Manitoba's Endangered Species Act of 1994. It appears on Alberta's provincial red list. In the United States, Whooping Cranes are protected under the Endangered Species Act of 1973. The wintering and breeding grounds of the species are in protected areas. The United States and Canada have set up several programs to protect this species. During migration, Whooping Cranes can often be found with Sandhill Cranes, which are a species that is legally hunted. In several states where there are hunting zones for Sandhill Cranes, the hunting season can be closed if Whooping Cranes are spotted. The Saskatchewan Museum of Natural History, the Saskatchewan Wildlife Federation, the Whooping Crane Conservation Association, the National Audubon Society and other conservation groups have generated a great deal of publicity about this bird in order to heighten public awareness of the plight of this species. |
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Recovery efforts:
A recovery plan for the Whooping Crane was approved in 1987 and then in 1993 by RENEW (the Committee on the REcovery of Nationally Endangered Wildlife). The goal of the plan is to increase populations of the Whooping Crane to the point where the status classification of the species can be improved. A 1995 memorandum of understanding with the United States indicated that a population of 1000 individuals is the desired goal. The objectives of the recovery plan for 1998/1999 are:
The long-term objecitves are:
Summary of research and monitoring activities:
Summary of recovery actions from 1988 to 1998:
Summary of progress to date:
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Comments
to: National Coordinator, Marketing and Outreach
Endangered Species Conservation Last update: 07/10/1999 URL of this page: http://www.speciesatrisk.gc.ca/Species/English/SearchDetail.cfm Use of photos Copyright © 1999, Environment Canada. All rights reserved. |
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