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Sains Malaysiana 47(7)(2018): 1439–1445
http://dx.doi.org/10.17576/jsm-2018-4707-11
Territorial and Duet Calls of Three Malaysian Owl Species (Panggilan
Kewilayahan dan Berdua-dua Tiga Spesies Burung Hantu Malaysia)
SIEW ANN YEE1, CHONG LEONG PUAN1,2,3* & PHOOI KUAN CHANG1
1Faculty of Forestry,
Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul
Ehsan
Malaysia
2Institute of Tropical
Forestry and Forest Products (INTROP), Universiti Putra
Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
3Biodiversity Unit,
Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
Diserahkan: 30 November 2017/Diterima: 9 Mac 2018
ABSTRACT
Vocalisations of tropical birds are
still largely unexplored particularly the nocturnal species. This
study examined and quantitatively described the territorial calls
and duets of the Sunda Scops-Owl (Otus lempiji), Brown Boobook (Ninox scutulata) and Spotted
Wood-Owl (Strix seloputo) based on 105 territorial call
and four duetting recordings collected from one forest reserve
and oil palm smallholdings in Selangor, Peninsular Malaysia. Wilcoxon
signed-rank tests found significant differences (p<0.05)
for almost all vocal parameters measured from the spectrograms
derived from the duets with one higher-pitched than the other.
Being the first study to describe the vocal structure of the duetting
calls of the three Malaysian strigids, this study serves as a
baseline for future behavioural study of nocturnal birds particularly
pertaining to conspecific interactions in the Sunda region.
Keywords: Duet; spectrogram;
territorial call; tropical nocturnal bird; vocalisation
ABSTRAK
Penyuaraan
burung tropika masih belum diterokai terutamanya spesies malam.
Kajian ini melihat dan secara kuantitatif menggambarkan panggilan
kewilayahan dan berdua-dua Burung Jampuk (Otus lempiji),
Burung Betemak (Ninox scutulata) dan Burung Carik-kafan
(Strix seloputo) berdasarkan 105 rakaman panggilan kewilayahan
dan empat berdua-dua yang dikumpulkan dari satu hutan rizab dan
ladang kelapa sawit di Selangor, Semenanjung Malaysia. Ujian pangkat
bertanda Wilcoxon mendapati terdapat perbezaan yang signifikan
(p<0.05) untuk hampir semua parameter vokal yang diukur
daripada spektrogram yang diperoleh daripada berdua-dua dengan
satu nada yang lebih tinggi daripada yang lain. Sebagai kajian
pertama untuk menggambarkan struktur vokal panggilan merangkumi
tiga spesies burung hantu di Malaysia, kajian ini berfungsi sebagai
garis dasar untuk kajian tingkah laku masa depan burung malam
terutama berkaitan dengan interaksi spesies yang sama di rantau
Sunda.
Kata
kunci: Berdua-dua; burung hantu tropika; panggilan kewilayahan;
penyuaraan; spektrogram RUJUKAN
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*Pengarang
untuk surat-menyurat; email: chongleong@upm.edu.my
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