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The greater sandhill crane proper initially suffered most; by 1940, probably fewer than 1,000 birds remained. Populations have since increased greatly again. At nearly 100,000, they are still fewer than the lesser sandhill crane, which, at about 400,000 individuals continent-wide, is the most plentiful extant crane. [26] [40]
Range maps are provided wherever possible; if a range map is not available, a description of the crane's range is provided. Ranges are based on the IOC World Bird List for that species unless otherwise noted. Population estimates are of the number of mature individuals and are taken from the IUCN Red List.
The International Crane Foundation also has a "Sandhill Crane Finder" tool that allows birdwatchers to see an updated map of where crane populations can be found near their area.
Ruby Marsh is a wetlands area within the national refuge, which serves as a nesting area for "the greater sandhill crane and trumpeter swan".In 1972, Ruby Marsh, which is located within the Ruby Lake National Wildlife Refuge, was designated as a National Natural Landmark by the National Park Service of the United States Department of the Interior.
Sandhill cranes stop at Jasper-Pulaski Fish & Wildlife Area during fall migration south. People flock to marvel; staff and volunteers count.
Crane Meadows National Wildlife Refuge It is an essential stop for many species of migrating birds. Located within a large watershed that includes Rice, Skunk and Mud Lakes, Platte and Skunk Rivers , Rice and Buckman Creeks, and sedge meadow wetlands, it harbors one of the largest nesting populations of greater sandhill cranes in Minnesota.
The Legislative Council Study Committee on Sandhill Cranes met Aug. 1. The group is charged with offering ideas to reduce crane-caused crop damage.
Visitor numbers increase every year; they topped 8,500 in 2001, despite a lack of developed facilities such as a visitor education center and restrooms.Volunteers from the local area dedicate their time on weekends guiding visitors through grasslands and tree-lined waterways to educate the public about the refuge in their backyard.