Mortality of Parental Mountain Plovers (Charadrius montanus) during the Post-hatching Stage.

Avian Conservation and Ecology

Victoria J Dreitz,¹ 

[1] Colorado Division of Wildlife

关键词: adult survival;    Charadrius montanus;    Colorado;    USA;    Mountain Plover;    post-hatching care;    precocial species;   

DOI  :  10.5751/ACE-00374-050104

学科分类：社会科学、人文和艺术（综合）

来源: Resilience Alliance Publications

【 摘 要 】

Monitoring, management, and conservation of grassland birds are topics of importance because of widespread population declines. Annual estimates of survival are available for many species, however knowledge of how survival varies on a seasonal basis remains poor.Information on the relative effects of breeding, overwintering, and migratory periods on population dynamics is necessary for effective management.Mortality risks often vary with the stage of the breeding cycle.In precocial species, mortality risks of adult birds are often higher during post-hatching care than prehatching.Using a multistate modeling approach, I investigated the influence of both environmental characteristics, measured by habitat, and individual characteristics, measured by sex and body mass, on post-hatching parental mortality of a declining grassland species, the Mountain Plover (Charadrius montanus).I found minimal evidence to support the effect of habitat, sex, or body mass on post-hatching parental mortality.Daily parental mortality was 0.0037 (SE = 0.0007, CI = 0.0026, 0.0053) and survival during the 30-day post-hatching period was 0.8943 (SE = 0.0187, CI = 0.8512, 0.9255).The findings from this study provide an understanding of the associations with today

【 授权许可】

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