Yellow-vented Bulbul – social behaviour/organisation

on 21st January 2018

YVB-on tree [AmarSingh]

“Some time ago I posted on my long standing observations of the difference in social behaviour/organisation of Yellow-vented Bulbuls (Pycnonotus goiavier analis) that dwell in cities and those in ‘rural’ environment. See: HERE.

“Wells 2007 states that ‘Typical day-time social units range from loners and pairs to parties of up to ten, the latter presumed to be mobile non-breeders.’

“My experience over many decades of watching is that this only applies to birds in ‘urban’ setting.

“I have regularly seen parties of 20-30 in the non-breeding periods in rural (semi-urban) areas. This is hard to document as they are often strung out when travelling together (see description in article above). I believe that they roost together at night and then travel together to feed.

“On this occasion I was fortunate to watch approximately 70 birds travelling together in the early morning, presumably to a fruiting tree. See the image at the top which documents 21 at one time in a bare tree which served as a staging tree (‘half-way resting point’). Birds were following each other in small and large groups and stopping intermittently along the way.

YVB-on tree [AmarSingh]

“The image above was taken 10 minutes earlier and shows a different 22 birds.
Sadly the route they were taking did not allow me to follow them.

“My interest now is to see if they nest communally.”

Dato’ Dr Amar-Singh HSS
Ipoh, Perak, Malaysi
15th December 2017

Location: Tambun, Ipoh, Perak, Malaysia
Habitat: Secondary growth near limestone hills, ex-mining pools

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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