Vocal Individuality of Great Gray Owls in the Sierra Nevada
ABSTRACT The cryptic plumage and nocturnal nature of the great gray owl ( Strix nebulosa ) make it difficult to study in its densely forested habitat. We investigated whether the vocalizations of individual great gray owls could be distinguished and used as a tool for population survey and monitorin...
Published in: | The Journal of Wildlife Management |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2009
|
Subjects: | |
Online Access: | http://dx.doi.org/10.2193/2008-124 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2193%2F2008-124 |
id |
crwiley:10.2193/2008-124 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.2193/2008-124 2023-12-03T10:30:50+01:00 Vocal Individuality of Great Gray Owls in the Sierra Nevada ROGNAN, CAMERON B. SZEWCZAK, JOSEPH M. MORRISON, MICHAEL L. 2009 http://dx.doi.org/10.2193/2008-124 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2193%2F2008-124 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Journal of Wildlife Management volume 73, issue 5, page 755-760 ISSN 0022-541X 1937-2817 Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics journal-article 2009 crwiley https://doi.org/10.2193/2008-124 2023-11-09T13:23:47Z ABSTRACT The cryptic plumage and nocturnal nature of the great gray owl ( Strix nebulosa ) make it difficult to study in its densely forested habitat. We investigated whether the vocalizations of individual great gray owls could be distinguished and used as a tool for population survey and monitoring. We recorded 312 territorial calls produced by 14 male and 11 female great gray owls between March and July 2006 and 2007 in the Sierra Nevada range of California, USA. We recorded 19 owls on multiple occasions within a season and 8 owls between seasons. We extracted 17 frequency and 15 temporal variables from the sonograms of each call. Discriminant analysis selected 9 variables and classified 92.8% of calls to the correct individual within a season; 71.4% of calls were classified to the correct individual between seasons. Our results indicate that territorial calls could be used to monitor individual great gray owls for both short‐ and long‐term studies. Vocal individuality could be useful as a noninvasive method to improve census estimates and yield information on site fidelity, turnover rates, seasonal movements, and behavioral traits of great gray owls. Article in Journal/Newspaper Strix nebulosa Wiley Online Library (via Crossref) The Journal of Wildlife Management 73 5 755 760 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics ROGNAN, CAMERON B. SZEWCZAK, JOSEPH M. MORRISON, MICHAEL L. Vocal Individuality of Great Gray Owls in the Sierra Nevada |
topic_facet |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
description |
ABSTRACT The cryptic plumage and nocturnal nature of the great gray owl ( Strix nebulosa ) make it difficult to study in its densely forested habitat. We investigated whether the vocalizations of individual great gray owls could be distinguished and used as a tool for population survey and monitoring. We recorded 312 territorial calls produced by 14 male and 11 female great gray owls between March and July 2006 and 2007 in the Sierra Nevada range of California, USA. We recorded 19 owls on multiple occasions within a season and 8 owls between seasons. We extracted 17 frequency and 15 temporal variables from the sonograms of each call. Discriminant analysis selected 9 variables and classified 92.8% of calls to the correct individual within a season; 71.4% of calls were classified to the correct individual between seasons. Our results indicate that territorial calls could be used to monitor individual great gray owls for both short‐ and long‐term studies. Vocal individuality could be useful as a noninvasive method to improve census estimates and yield information on site fidelity, turnover rates, seasonal movements, and behavioral traits of great gray owls. |
format |
Article in Journal/Newspaper |
author |
ROGNAN, CAMERON B. SZEWCZAK, JOSEPH M. MORRISON, MICHAEL L. |
author_facet |
ROGNAN, CAMERON B. SZEWCZAK, JOSEPH M. MORRISON, MICHAEL L. |
author_sort |
ROGNAN, CAMERON B. |
title |
Vocal Individuality of Great Gray Owls in the Sierra Nevada |
title_short |
Vocal Individuality of Great Gray Owls in the Sierra Nevada |
title_full |
Vocal Individuality of Great Gray Owls in the Sierra Nevada |
title_fullStr |
Vocal Individuality of Great Gray Owls in the Sierra Nevada |
title_full_unstemmed |
Vocal Individuality of Great Gray Owls in the Sierra Nevada |
title_sort |
vocal individuality of great gray owls in the sierra nevada |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.2193/2008-124 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2193%2F2008-124 |
genre |
Strix nebulosa |
genre_facet |
Strix nebulosa |
op_source |
The Journal of Wildlife Management volume 73, issue 5, page 755-760 ISSN 0022-541X 1937-2817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2193/2008-124 |
container_title |
The Journal of Wildlife Management |
container_volume |
73 |
container_issue |
5 |
container_start_page |
755 |
op_container_end_page |
760 |
_version_ |
1784256899779133440 |