Sunda scops-owl density estimation via distance sampling and call playback

Nocturnal birds in the tropics remain little studied primarily due to the logistical difficulties of surveying these birds at night. While call playback has been widely employed in the temperate regions, its practicality has not been adequately demonstrated on tropical owl species. This study aimed...

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Main Authors:	Phillcaine Pilla, Chong, Leong Puan, Lim, Voon-Ching, Badrul Azhar Mohamed, Mohamed Zakaria
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2018
Online Access:	http://journalarticle.ukm.my/12025/ http://journalarticle.ukm.my/12025/ http://journalarticle.ukm.my/12025/1/03%20Phillcaine%20Pilla.pdf

id	ukm-12025
recordtype	eprints
spelling	ukm-120252018-09-09T23:10:19Z http://journalarticle.ukm.my/12025/ Sunda scops-owl density estimation via distance sampling and call playback Phillcaine Pilla, Chong, Leong Puan Lim, Voon-Ching Badrul Azhar Mohamed, Mohamed Zakaria, Nocturnal birds in the tropics remain little studied primarily due to the logistical difficulties of surveying these birds at night. While call playback has been widely employed in the temperate regions, its practicality has not been adequately demonstrated on tropical owl species. This study aimed to test the feasibility of estimating the density of the Sunda scops-owl (Otus lempiji) in a lowland forest in Peninsular Malaysia based on call playback and distance sampling. From a total of 58 detections of the owl species from October 2012 to May 2013, 72.41% (42 detections) were made when the birds were breeding. The densities of the owl were estimated at 1.6 individuals and 2.6 individuals per 10 ha based on spontaneous and provoked calls (i.e. before and after call playback), respectively. Broadcasting of the calls significantly increased the numbers of detections (χ2 = 16.038, p<0.001) during both breeding and non-breeding seasons of the birds. The combination of call playback and distance sampling improved the detectability as well as precision of the owl’s density estimation and can be potentially applied on other little known owl species in Southeast Asia. Penerbit Universiti Kebangsaan Malaysia 2018-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12025/1/03%20Phillcaine%20Pilla.pdf Phillcaine Pilla, and Chong, Leong Puan and Lim, Voon-Ching and Badrul Azhar Mohamed, and Mohamed Zakaria, (2018) Sunda scops-owl density estimation via distance sampling and call playback. Sains Malaysiana, 47 (3). pp. 441-446. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid47bil3_2018/KandunganJilid47Bil3_2018.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Nocturnal birds in the tropics remain little studied primarily due to the logistical difficulties of surveying these birds at night. While call playback has been widely employed in the temperate regions, its practicality has not been adequately demonstrated on tropical owl species. This study aimed to test the feasibility of estimating the density of the Sunda scops-owl (Otus lempiji) in a lowland forest in Peninsular Malaysia based on call playback and distance sampling. From a total of 58 detections of the owl species from October 2012 to May 2013, 72.41% (42 detections) were made when the birds were breeding. The densities of the owl were estimated at 1.6 individuals and 2.6 individuals per 10 ha based on spontaneous and provoked calls (i.e. before and after call playback), respectively. Broadcasting of the calls significantly increased the numbers of detections (χ2 = 16.038, p<0.001) during both breeding and non-breeding seasons of the birds. The combination of call playback and distance sampling improved the detectability as well as precision of the owl’s density estimation and can be potentially applied on other little known owl species in Southeast Asia.
format	Article
author	Phillcaine Pilla, Chong, Leong Puan Lim, Voon-Ching Badrul Azhar Mohamed, Mohamed Zakaria,
spellingShingle	Phillcaine Pilla, Chong, Leong Puan Lim, Voon-Ching Badrul Azhar Mohamed, Mohamed Zakaria, Sunda scops-owl density estimation via distance sampling and call playback
author_facet	Phillcaine Pilla, Chong, Leong Puan Lim, Voon-Ching Badrul Azhar Mohamed, Mohamed Zakaria,
author_sort	Phillcaine Pilla,
title	Sunda scops-owl density estimation via distance sampling and call playback
title_short	Sunda scops-owl density estimation via distance sampling and call playback
title_full	Sunda scops-owl density estimation via distance sampling and call playback
title_fullStr	Sunda scops-owl density estimation via distance sampling and call playback
title_full_unstemmed	Sunda scops-owl density estimation via distance sampling and call playback
title_sort	sunda scops-owl density estimation via distance sampling and call playback
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2018
url	http://journalarticle.ukm.my/12025/ http://journalarticle.ukm.my/12025/ http://journalarticle.ukm.my/12025/1/03%20Phillcaine%20Pilla.pdf
first_indexed	2023-09-18T20:01:41Z
last_indexed	2023-09-18T20:01:41Z
_version_	1777406890842521600

Sunda scops-owl density estimation via distance sampling and call playback

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