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Mountain Leaf-warbler

on 24th March 2019
Mountain Leaf-warbler.

“The Mountain Leaf-warbler (Phylloscopus trivirgatus parvirostris) is difficult to watch and image. It is found usually high in the canopy or in dense shade.

Mountain Leaf-warbler.

“On this day it was in full song and I manged to get some recordings. The song appears to be a ‘jumble’ of notes, going up and down, often rendered from high in the canopy in ‘full throttle’. For a small bird, the high frequency song is loud and carries far. The duration of song is often 4 seconds but can be only 1-2 seconds at times. It is repeated quickly with only a 1-2 second pause in between songs. I did not hear any answering calls but, at the start of the start of the recordings, a White-tailed Robin (Myiomela leucura leucura) can be heard three times.

Mountain Leaf-warbler.

“The sonogram and waveform of one song are in seen below. You can see the highly complex nature of the song and a lot of information is being conveyed at different frequencies. There is a stronger baseline component at 3-7kHz but the notes go up to 19kHz in a feathery pattern. There is no ‘jumble’ here at all; the bird is a one person symphony.

Sonogram and waveform.

“And edited audio recording can be found HERE.

“Also 2 Mountain Leaf-warblers were part of a mixed foraging parties (bird waves) with 2 Chestnut-Tailed Minlas, 5-6 Blue-winged Minlas (Minla cyanouroptera sordidior), 7-8 Silver-eared Mesias (Leiothrix argentauris tahanensis), 4 Yellow-breasted Warblers (Seicercus montis davisoni), 4 Bar-winged Flycatcher-shrikes (Hemipus picatus intermedius), 1 White-throated Fantail (Rhipidura albicollis atrata), 1 Golden Babbler (Stachyridopsis chrysaea chrysops), 1 Grey-throated Babbler (Stachyris nigriceps davisoni), 2 Grey-chinned Minivet (Pericrocotus solaris montanus) and others (unidentified).

Dato’ Dr Amar-Singh HSS
Ipoh, Perak, Malaysia
14th March 2019

Location: ~1,800m ASL, Gunung Brinchang, Cameron Highlands, Pahang, Malaysia
Habitat: Road running through mixed secondary & primary montane forest

If you like this post please tap on the Like button at the left bottom of page. Any views and opinions expressed in this article are solely those of the authors/contributors, and are not endorsed by the Lee Kong Chian Natural History Museum (LKCNHM, NUS) or its affiliated institutions. Readers are encouraged to use their discretion before making any decisions or judgements based on the information presented.

YC Wee

Dr Wee played a significant role as a green advocate in Singapore through his extensive involvement in various organizations and committees: as Secretary and Chairman for the Malayan Nature Society (Singapore Branch), and with the Nature Society (Singapore) as founding President (1978-1995). He has also served in the Nature Reserve Board (1987-1989), Nature Reserves Committee (1990-1996), National Council on the Environment/Singapore Environment Council (1992-1996), Work-Group on Nature Conservation (1992) and Inter-Varsity Council on the Environment (1995-1997). He is Patron of the Singapore Gardening Society and was appointed Honorary Museum Associate of the Lee Kong Chian Natural History Museum (LKCNHM) in 2012. In 2005, Dr Wee started the Bird Ecology Study Group. With more than 6,000 entries, the website has become a valuable resource consulted by students, birdwatchers and researchers locally and internationally. The views and opinions expressed in this article are his own, and do not represent those of LKCNHM, the National University of Singapore or its affiliated institutions.

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