Whooping Crane Winter Count, 1962-63

Whooping Crane Egg Management: Options and Consequences

Eggs to build captive whooping crane (Grus americana) flocks and most eggs for reintroduction experiments have come from second viable eggs in 2-egg clutches in Canada. Four years ago, egg removal ceased. Based on reproductive rates for years when second eggs were removed and for years when eggs were not removed, we project numbers of young fledging in the wild and in captivity for the 2 most l...

Whooping crane recruitment enhanced by egg removal

To facilitate recovery through captive breeding and foster-parenting programs of the endangered whooping crane, one of two eggs was removed from 62% of nests in Wood Buffalo National Park during 1967–1996. Egg removals were justified because cranes usually rear a single chick; the other dies to siblicide or predation. Concerns exist that the wild population might have recovered even faster if n...

Avian tuberculosis and salmonellosis in a whooping crane (Grus americana).

be devoted to a more detailed analysis of additional serum samples from these and other wolf populations in the state. This study was supported by the U.S.D.I. Fish and Wildlife Service, the Mardag Foundation, the U.S.D.A. North Central Forest Experiment Station, the University of Minnesota College of Veterinary Medicine, and the Veterans Administration Medical Center. The cooperation of field ...

Cranes of the World: Whooping Crane (Grus americana)

Monitoring Whooping Crane Abundance Using Aerial Surveys: Influences on Detectability

The whooping crane (Grus americana), an endangered species, has been counted on its winter grounds in Texas, USA, since 1950 using fixed-wing aircraft. Many shortcomings of the traditional survey technique have been identified, calling into question its efficacy, defensibility, repeatability, and usefulness into the future. To improve and standardize monitoring effort, we began investigating ne...