Seventeen endangered whooping cranes and their surrogate parents (four ultralight aircraft) today reached Class of 2007"--are the seventh group to be guided by ultralights to Florida from
At 97 days, this was the longest ultralight-led migration since WCEP began reintroducing whooping cranes. Unsuitable flying weather caused delays at nearly every stopover along the migration route. WCEP biologists say that the lengthy trip and late arrival will not affect the birds ability to make their unassisted migration northward this spring.
In addition to the 17 ultralight-led birds, seven cranes made their first southward migration this fall as part of WCEPs Direct Autumn Release program. Biologists from the International Crane Foundation and the U.S. Fish and Wildlife Service reared the seven cranes at Necedah NWR and released them in the company of older cranes in hopes that the young birds would learn the migration route. These seven birds are currently at several locations in Tennessee.
In 2001, Operation Migrations pilots led the first whooping crane chicks, conditioned to follow their ultralight surrogates, from Necedah NWR to Chassahowitzka NWR. Each subsequent year, biologists and pilots have conditioned and guided additional groups of juvenile cranes to Chassahowitzka.
Whooping cranes that take part in the ultralight and Direct Autumn Release reintroductions are hatched at the U.S. Geological Surveys Patuxent Wildlife Research Center in Laurel, Md., and the International Crane Foundation in Baraboo, Wis. Chicks are raised under a strict isolation protocol and to ensure the birds remain wild, handlers adhere to a no-talking rule and wear costumes designed to mask the human form.
New classes of cranes are brought to Necedah NWR each June to begin a summer of conditioning behind the ultralights to prepare them for their fall migration. Pilots lead the birds on gradually longer training flights throughout the summer until the young cranes are deemed ready to follow the aircraft along the migration route.
Most graduated classes of whoopers spend the summer in central Wisconsin, where they use areas on or near the Necedah NWR, as well as other public and private lands.
In the spring and fall, project staff from the International Crane Foundation and the U.S. Fish and Wildlife Service track and monitor the released cranes in an effort to learn as much as possible about their unassisted journeys and the habitat choices they make both along the way and on their summering ground.
Whooping cranes were on the verge of extinction in the 1940s. Today, there are only about 500 birds in existence, 350 of them in the wild. Aside from the 76 Wisconsin-Florida birds, the only other migrating population of whooping cranes nests at the Wood Buffalo National Park in the Northwest Territories of Canada and winters at the Aransas National Wildlife Refuge on the Texas Gulf Coast.
This year the Wood Buffalo-Aransas flock reached a record size, as biologists counted 266 individuals on the Aransas wintering grounds.
A non-migrating flock of approximately 41 birds lives year-round in the central Florida Kissimmee region. The remaining 150 whooping cranes are in captivity in zoos and breeding facilities around North America.
Whooping cranes, named for their loud and penetrating unison calls, live and breed in wetland areas, where they feed on crabs, clams, frogs and aquatic plants. They are distinctive animals, standing five feet tall, with white bodies, black wing tips and red crowns on their heads.
Whooping Crane Eastern Partnership founding members are the , , U.S. Fish and Wildlife Service, U.S. Geological Survey, Patuxent Wildlife Research Center and National Wildlife Health CenterU.S. Geological Surveys Patuxent Wildlife Research Center and National Wildlife Health Center, International Whooping Crane Recovery Team.
