Removing barred owls from local areas: Techniques and feasibility
Abstract The barred owl (Strix varia) has invaded the range of the northern spotted owl (S. occidentalis caurina) over the past century. The Northern Spotted Owl Recovery Plan recommended removal experiments to assess both the effect of barred owls on spotted owls and the feasibility of initiating s...
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| Format: | Article |
| Language: | English |
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Wiley
2014-03-01
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| Series: | Wildlife Society Bulletin |
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| Online Access: | https://doi.org/10.1002/wsb.381 |
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| author | Lowell V. Diller John P. Dumbacher Raymond P. Bosch Robin R. Bown R. J. Gutiérrez |
| author_facet | Lowell V. Diller John P. Dumbacher Raymond P. Bosch Robin R. Bown R. J. Gutiérrez |
| author_sort | Lowell V. Diller |
| collection | DOAJ |
| description | Abstract The barred owl (Strix varia) has invaded the range of the northern spotted owl (S. occidentalis caurina) over the past century. The Northern Spotted Owl Recovery Plan recommended removal experiments to assess both the effect of barred owls on spotted owls and the feasibility of initiating some form of barred owl control to enhance recovery of the northern spotted owl. Concern has been raised that such experiments will be neither feasible nor cost‐effective. To assess these and other concerns, we conducted lethal removal of barred owls within 3 areas totaling 85,205 ha in northern California, USA. We collected 73 of 81 territorial barred owls detected from 2009 to 2012 during 122 field visits. It took an average of 2 hr 23 min to collect each barred owl from the time of arrival at a site to the time a collected bird was completely processed for field data. Most barred owls were collected within one‐half hour of arrival at a site. Lethal removal of barred owls was rapid, technically feasible, and cost‐effective. We provide recommendations for techniques we found to be effective. © 2013 The Wildlife Society. |
| format | Article |
| id | doaj-art-a5c45bb59922419cb2e3b06d39964b94 |
| institution | OA Journals |
| issn | 2328-5540 |
| language | English |
| publishDate | 2014-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wildlife Society Bulletin |
| spelling | doaj-art-a5c45bb59922419cb2e3b06d39964b942025-08-20T01:56:34ZengWileyWildlife Society Bulletin2328-55402014-03-0138121121610.1002/wsb.381Removing barred owls from local areas: Techniques and feasibilityLowell V. Diller0John P. Dumbacher1Raymond P. Bosch2Robin R. Bown3R. J. Gutiérrez4Green Diamond Resource Company600 Riverside Road, PO Box 68KorbelCA95550USACalifornia Academy of SciencesSan FranciscoCA94103USAUnited States Fish and Wildlife ServiceArcataCA95521USAUnited States Fish and Wildlife ServicePortlandOR97232USADepartment of Fisheries, Wildlife, and Conservation BiologyUniversity of MinnesotaSaint PaulMN55108USAAbstract The barred owl (Strix varia) has invaded the range of the northern spotted owl (S. occidentalis caurina) over the past century. The Northern Spotted Owl Recovery Plan recommended removal experiments to assess both the effect of barred owls on spotted owls and the feasibility of initiating some form of barred owl control to enhance recovery of the northern spotted owl. Concern has been raised that such experiments will be neither feasible nor cost‐effective. To assess these and other concerns, we conducted lethal removal of barred owls within 3 areas totaling 85,205 ha in northern California, USA. We collected 73 of 81 territorial barred owls detected from 2009 to 2012 during 122 field visits. It took an average of 2 hr 23 min to collect each barred owl from the time of arrival at a site to the time a collected bird was completely processed for field data. Most barred owls were collected within one‐half hour of arrival at a site. Lethal removal of barred owls was rapid, technically feasible, and cost‐effective. We provide recommendations for techniques we found to be effective. © 2013 The Wildlife Society.https://doi.org/10.1002/wsb.381barred owlCalifornialethal removalnorthern spotted owlStrix occidentalis caurinaStrix varia |
| spellingShingle | Lowell V. Diller John P. Dumbacher Raymond P. Bosch Robin R. Bown R. J. Gutiérrez Removing barred owls from local areas: Techniques and feasibility Wildlife Society Bulletin barred owl California lethal removal northern spotted owl Strix occidentalis caurina Strix varia |
| title | Removing barred owls from local areas: Techniques and feasibility |
| title_full | Removing barred owls from local areas: Techniques and feasibility |
| title_fullStr | Removing barred owls from local areas: Techniques and feasibility |
| title_full_unstemmed | Removing barred owls from local areas: Techniques and feasibility |
| title_short | Removing barred owls from local areas: Techniques and feasibility |
| title_sort | removing barred owls from local areas techniques and feasibility |
| topic | barred owl California lethal removal northern spotted owl Strix occidentalis caurina Strix varia |
| url | https://doi.org/10.1002/wsb.381 |
| work_keys_str_mv | AT lowellvdiller removingbarredowlsfromlocalareastechniquesandfeasibility AT johnpdumbacher removingbarredowlsfromlocalareastechniquesandfeasibility AT raymondpbosch removingbarredowlsfromlocalareastechniquesandfeasibility AT robinrbown removingbarredowlsfromlocalareastechniquesandfeasibility AT rjgutierrez removingbarredowlsfromlocalareastechniquesandfeasibility |