Western Burrowing Owls (Athene Cunicularia Hypugaea ) in Southeast Alberta [microform]: Juvenile Survivorship from Fledging to Migration, Effect of Tags, and Late-season Diets PDF Download
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![Western Burrowing Owls (Athene Cunicularia Hypugaea ) in Southeast Alberta [microform]: Juvenile Survivorship from Fledging to Migration, Effect of Tags, and Late-season Diets PDF](https://books.google.com/books/content/images/frontcover/7yifSgAACAAJ?fife=w150-h200)
Author: Shyry, Darcey T
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
ISBN:
Category : Burrowing owl
Languages : en
Pages : 87
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![Western Burrowing Owls (Athene Cunicularia Hypugaea ) in Southeast Alberta [microform]: Juvenile Survivorship from Fledging to Migration, Effect of Tags, and Late-season Diets PDF](https://books.google.com/books/content/images/frontcover/7yifSgAACAAJ?fife=w80-h100)
Author: Shyry, Darcey T
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
ISBN:
Category : Burrowing owl
Languages : en
Pages : 87
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Book Description
Author: Darcy T. Shyry
Publisher:
ISBN:
Category : Burrowing owl
Languages : en
Pages : 87
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Reintroduction of captive-bred Western Burrowing Owls (Athene cunicularia hypugaea) in the Nicola Valley, British Columbia, has had limited success in increasing the local breeding population. Traditionally, yearling captive-hatched Burrowing Owls that were paired and released into artificial burrows in the field, held overnight, and provided with supplemental food throughout the breeding season (hard release) have had high post-release dispersal and mortality. In 2005 and 2006, I used an alternative soft-release technique to test for an improvement upon the hard-release technique. The soft release followed the same procedure as the traditional hard release but also included enclosures around burrow entrances to contain the owls for a 2-week period in the field prior to release. I compared immediate post-release dispersal, seasonal survival, and reproductive success for 37 hard-released and 30 soft-released pairs. I radio-tagged 39 of these released owls in order to accurately monitor their activities, regardless of whether they remained at release sites or dispersed. The soft-release technique led to 20% more owls remaining at the release sites, 14% more owls surviving the breeding season, and 20% more owl pairs fledging juveniles. In addition to investigating adult survival and reproductive success, I examined post-fledging juvenile survival, local recruitment, and habitat use, and adult prey consumption behaviour in order to assess the potential of these aspects to limit the success of the reintroduction. Survival and local recruitment rates of the juveniles of captive-bred adults released with two different techniques were similar to that of juveniles of wild adults in the same study area or in other parts of the Burrowing Owl's range. Juvenile habitat-selection analyses identified the importance of rangeland, and comparisons of prey consumption revealed the rapid development of foraging abilities by captive-bred Burrowing Owls. I concluded that these aspects of.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Reintroduction of captive-bred Western Burrowing Owls (Athene cunicularia hypugaea) in the Nicola Valley, British Columbia, has had limited success in increasing the local breeding population. Traditionally, yearling captive-hatched Burrowing Owls that were paired and released into artificial burrows in the field, held overnight, and provided with supplemental food throughout the breeding season (hard release) have had high post-release dispersal and mortality. In 2005 and 2006, I used an alternative soft-release technique to test for an improvement upon the hard-release technique. The soft release followed the same procedure as the traditional hard release but also included enclosures around burrow entrances to contain the owls for a 2-week period in the field prior to release. I compared immediate post-release dispersal, seasonal survival, and reproductive success for 37 hard-released and 30 soft-released pairs. I radio-tagged 39 of these released owls in order to accurately monitor their activities, regardless of whether they remained at release sites or dispersed. The soft-release technique led to 20% more owls remaining at the release sites, 14% more owls surviving the breeding season, and 20% more owl pairs fledging juveniles. In addition to investigating adult survival and reproductive success, I examined post-fledging juvenile survival, local recruitment, and habitat use, and adult prey consumption behaviour in order to assess the potential of these aspects to limit the success of the reintroduction. Survival and local recruitment rates of the juveniles of captive-bred adults released with two different techniques were similar to that of juveniles of wild adults in the same study area or in other parts of the Burrowing Owl's range. Juvenile habitat-selection analyse sidentified the importance of rangeland, and comparisons of prey consumption revealed the rapid development of foraging abilities by captive-bred Burrowing Owls. I concluded that these aspects of.
Author: Nicholson, Joel
Publisher:
ISBN: 9780778522003
Category : Bird surveys
Languages : en
Pages : 13
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Book Description
![Survival and Dispersal of Juvenile Burrowing Owls ( Athene Cunicularia) During the Post-fledging, Pre-migratory Period (Saskatchewan) [microform] PDF](https://books.google.com/books/content/images/frontcover/ALGmngEACAAJ?fife=w80-h100)
Author: Todd, L. Danielle
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780612657861
Category : Burrowing owl
Languages : en
Pages : 152
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Author: Geoffrey L. Holroyd
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 4
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"The Burrowing Owl Athene cunicularia gained its name from a particular behaviour: it nests underground."--p. [1].
Author: Joel Nicholson
Publisher:
ISBN: 9780778522010
Category : Bird surveys
Languages : en
Pages : 13
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Author: A. F. Joy Stevens
Publisher: Alberta Sustainable Resource Development
ISBN: 9780778590255
Category : Endangered species
Languages : en
Pages : 15
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Book Description
Declining populations of burrowing owls over the past several decades have led to the species being classified as endangered in Alberta and nationally. Population recovery is believed to be possible; however, there are several management issues and knowledge gaps that need to be addressed. The Alberta recovery plan for the burrowing owls lists protection and management of breeding habitat as important objectives for recovery, and the spatial identification of potential breeding habitat is the first step in the process. This study provided one of the first spatially explicit descriptions of potential critical habitat for the burrowing owl recovery team. This report explains the utility of this habitat selection model for burrowing owl conservation and should reduce potential confusion about applying this model.--Document.
Author: Alberta. Fish and Wildlife Division
Publisher: University of Alberta Press
ISBN: 9780778545118
Category : Burrowing owl
Languages : en
Pages : 24
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