h Green Broadbill at Kubah National Park by SINGH HSS, Amar - Borneo Bird Images

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EURYLAIMIDAE Broadbills > Green Broadbill

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Green Broadbill

Latin Name : Calyptomena viridis

Site Name : Kubah National Park

Photographer : SINGH HSS, Amar

Date : 2017-09-12

Notes : I recorded the calls but processing the audio recording has been tough as the calls are soft and there are loud insect calls, frogs and other birds with the background jungle hum. Post 3 is a heavily edited and amplified recording of the common call they make with a sonogram and waveform in Post 4 (step up the volume to listen). Wells (2007) reports “the furthest carrying call is the bubble-trill, a brief mellow moo followed by an up-inflected rattle, with a purring quality: oo-turrr, proven to be given by males”. Davison (1999) describes them as “an accelerating and falling series of notes, as though a small wooden ball were dropped onto a table”. I find this a very apt description. Bruce (2017) says they are “a soft, bubbling trill, starting with quieter note, that increases in tempo and has upward inflection, toi, toi-oi-oi-oi-oick; …. like sound of a stone bouncing on glass..” We also heard the low ‘moaning’ calls of a long drawn out whistle but I could not tease these out of the ‘busy’ recordings.  
Wells, D.R. (2007) The birds of the Thai-Malay Peninsula: Vol. 2 (Passarines). Christopher Helm, London. Davison G.W.H. (1999) The Birds of Borneo by B. E. Smythies (4th edition). Natural History Publication, Kota Kinabalu Bruce, M.D. (2017). Green Broadbill (Calyptomena viridis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.