Mountain Leaf-warbler

posted in: Interspecific, Species, Vocalisation | 0
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

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