Results 151 to 160 of about 2,914 (191)
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MANIFESTATIONS OF HYPERPARATHYROIDISM IN JUVENILE WHOOPING CRANES (GRUS AMERICANA)
Journal of Zoo and Wildlife Medicine, 2019Juvenile whooping cranes (Grus americana) raised for wild release were found to have an increased incidence of rib fractures at fledging in 2017 compared with the previous 16 years. Serum analysis showed 30-day-old juveniles in 2017 (n = 12) had significantly lower 25-hydroxyvitamin D3 and significantly higher parathyroid hormone concentrations than ...
Lily Parkinson, Barry K Hartup
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Survivorship of the Whooping Crane, Grus Americana
Ecology, 1980population regulation in nature, as proposed in an earlier paper (Y-omnicki 1978a), then one can expect a very heavy mortality among animals leaving one local habitat in search of another. If so, an individual which stays longer in the same local habitat would produce more progeny in his life span.
Richard S Miller
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Journal of Wildlife Diseases, 2020
We reviewed necropsy records of 124 Whooping Cranes (Grus americana) recovered following reintroduction of 268 individuals from 2001 to 2016 in the eastern US. Causes of death were determined in 62% (77/124) of cases facilitated by active monitoring that limited decomposition and scavenging artifact. The greatest proportions of mortality were caused by
Julia S Lankton, Barry K Hartup
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We reviewed necropsy records of 124 Whooping Cranes (Grus americana) recovered following reintroduction of 268 individuals from 2001 to 2016 in the eastern US. Causes of death were determined in 62% (77/124) of cases facilitated by active monitoring that limited decomposition and scavenging artifact. The greatest proportions of mortality were caused by
Julia S Lankton, Barry K Hartup
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Serum Biochemical Analytes and Trace Elements in Juvenile Whooping Cranes (Grus americana)
Journal of Wildlife Diseases, 2019Biochemical and trace element analyses of blood from wild Whooping Cranes (Grus americana) were performed to assess the health of the only self-sustaining, migratory population in North America. Juvenile cranes (n=31) approximately 49-70 d-old were sampled at Wood Buffalo National Park, Northwest Territories, Canada, in midsummer from 2010 to 2012 ...
Barry K Hartup
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The whooping crane (Grus americana) population of North America
Biological Conservation, 1974Abstract A model of the whooping crane population of North America shows that its rate of increase has been the result of a stabilized death rate, in spite of an overall decrease in the birth rate and no significant increase in the breeding population.
Richard S. Miller +2 more
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Journal of Ornithology, 2007
Head-bobbing is a common and characteristic behavior of walking birds. While the activity could have a relatively minor biomechanical function, for balance and stabilization of gait, head-bobbing is thought to be primarily a visual behavior in which fixation of gaze alternates with a forward movement that generates visual flow.
Thomas W. Cronin +2 more
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Head-bobbing is a common and characteristic behavior of walking birds. While the activity could have a relatively minor biomechanical function, for balance and stabilization of gait, head-bobbing is thought to be primarily a visual behavior in which fixation of gaze alternates with a forward movement that generates visual flow.
Thomas W. Cronin +2 more
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Zoo Biology, 2007
AbstractThe enteric flora of captive whooping cranes (Grus americana) and sandhill cranes (Grus canadensis) has not been well described, despite its potential importance in the understanding of both the normal condition of the intestinal physiology of these animals and the altered colonization within disease states in these birds.
Bryanne M, Hoar +4 more
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AbstractThe enteric flora of captive whooping cranes (Grus americana) and sandhill cranes (Grus canadensis) has not been well described, despite its potential importance in the understanding of both the normal condition of the intestinal physiology of these animals and the altered colonization within disease states in these birds.
Bryanne M, Hoar +4 more
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Population characteristics of the Whooping Crane, Grus americana
Canadian Journal of Zoology, 1983The principal migratory population of Whooping Cranes is now increasing at an annual rate of about 4%, about twice the rate observed prior to the mid-1950's. Significant periodic fluctuations in total numbers overlay these average trends. These fluctuations can be explained by observed fluctuations in annual recruitment. On average, both the number of
Clark S. Binkley, Richard S. Miller
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Effects of rearing treatment on the behavior of captive whooping cranes (Grus americana)
Applied Animal Behaviour Science, 2004Abstract Small founder populations of whooping cranes are managed to maximize egg production for the purpose of reintroducing young to the wild. This results in an excessive number of hatched chicks that cannot be naturally reared by parents. Hand-rearing techniques have been developed to raise the additional hatches.
Michael D. Kreger +3 more
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Food consumption and retention time in captive whooping cranes (Grus americana)
Zoo Biology, 1997Food consumption, digesta retention time, and food preference were measured for captive whooping cranes fed pelleted diets. The basal commercial diet was compared to four mixtures containing 70% basal and 30% of one of four important winter foods for the whooping crane: blue crab (Callinectes sapidus), wolfberry fruit (Lycium carolinianum), live oak ...
Jay T. Nelson +2 more
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