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Does the Fire-turfted Barbet sing with its bill closed?

on 20th September 2010

An earlier post by KC Tsang on the call of the Fire-tufted Barbet (Psilopogon pyrolophus) mentioned that the bird appeared to sing with its bill closed. At that time Janet, who was with him, also commented on this.

The posting attracted the attention of Dato’ Dr Amar-Singh HSS who had some doubts, “The call is definitely a Fire-tufted Barbet but I am not entirely convinced the bird in the video made it. Wells (1999) says ‘At the start of the call, body held horizontal but it rises near vertical as tempo increase.’ The bird in the video seems to be listening to the call made rather than making it.”

Amar referred to the Internet Bird Collection where there are a few videos of the barbet calling. Yes, these birds clearly have their bills open when calling. Amar may well be right. The Fire-tufted Barbet in the video may be listening to a call by another barbet rather than actually calling.

The question that needs to be answered is whether the Fire-tufted Barbet can call with its bill closed. And whether it can call with its bill opened or closed, depending on the circumstances.

All birds change their bill aperture frequently within a single song (Williams, 2001). And there are a number of species that call with their bill closed. In fact the Blue-eared Barbet (Megalaima australis) calls with its bill closed, as reported by Adrian Lim in an earlier post.

Field ornithologist Wang Luan Keng urges more field observations on vocalisation, not only on the calls and songs per se but on the behaviour of the birds when vocalising.

Reference:
Williams, H., 2001. Choreography of song, dance and beak movements in the zebra finch (Taeniopygia guttata). The Journal of Experimental Biology 204, 3497-3506.

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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