Current Status, Distribution and Conservation of the Western Burrowing Owl (Athene Cunicularia Hypugaea) in Western Riverside County, CA PDF Download
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Author: Ginny Anne Short
Publisher:
ISBN:
Category : Athene (Birds)
Languages : en
Pages : 118
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Book Description
Author: Ginny Anne Short
Publisher:
ISBN:
Category : Athene (Birds)
Languages : en
Pages : 118
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Book Description
Author:
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 222
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Author: Melissa Jo Panella
Publisher:
ISBN:
Category : Burrowing owl
Languages : en
Pages : 23
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Author: Michelle A. Ocken
Publisher:
ISBN:
Category : Burrowing owl
Languages : en
Pages :
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Author: U.S. Fish & Wildlife Service
Publisher: CreateSpace
ISBN: 9781489583857
Category :
Languages : en
Pages : 118
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Summary of Conservation Recommendations for Burrowing Owls
Author:
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ISBN:
Category : Bird populations
Languages : en
Pages :
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Author: U. S. Fish U.S. Fish and Wildlife Service
Publisher: CreateSpace
ISBN: 9781507861615
Category :
Languages : en
Pages : 120
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Book Description
The Western Burrowing Owl (Athene cuniculariahypugaea) is a grassland specialist distributedthroughout w. North America, primarily in openareas with short vegetation and bare ground indesert, grassland, and shrub-steppe environments.Burrowing Owls are dependent on the presence of fossorial mammals (primarily prairie dogs andground squirrels), whose burrows are used fornesting and roosting. Burrowing Owls are protectedby the Migratory Bird Treaty Act in the UnitedStates and Mexico. They are listed as Endangered inCanada and Threatened in Mexico. They areconsidered by the U.S. Fish and Wildlife Service(USFWS) to be a Bird of Conservation Concern atthe national level, in three USFWS regions, and innine Bird Conservation Regions . At the state level, Burrowing Owls are listed as Endangered inMinnesota, Threatened in Colorado, and as a Speciesof Concern in California, Montana, Oklahoma, Oregon, Utah, Washington, and Wyomin
Author:
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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: April F Joy Manalo Stevens
Publisher:
ISBN:
Category : Burrowing owl
Languages : en
Pages : 228
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Author: Breanna Elizebeth Pyott
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Migratory animals are a growing conservation concern and present unique challenges to population augmentation programs. Quantitatively evaluating and monitoring augmentation efforts is critical for conservation success. My research formally evaluated the success of two Western Burrowing Owl (Athene cunicularia hypugaea) population augmentation programs in Manitoba and British Columbia using survival, recruitment, and reproduction. Manitoba's headstarting program holds hatching year (HY) owls overwinter taken from the nests of previous captive-released pairs. After being overwintered in human care, the HY owls are released in pairs as second year (SY) owls. British Columbia has a breeding and release program where owls are bred in facilities; their offspring are then held overwinter, paired and soft-released in the spring. Both programs soft-release SY pairs that lay clutches in the wild and young are referred to as "wild-hatched owls". In British Columbia, wild-hatched owls returned significantly more than captive-released (ß = 1.05±0.29, p
