Lena Chow wrote on 6th July 2009: “Some 3 years back, I observed Yellow-vented Bulbuls (Pycnonotus goiavier) darting in and out of the trees of Aljunied Park after a heavy rain. At that time, I had only a little pocketcam, and could not provide any images as the action was going on at canopy level, and about 30m away from my bedroom window where I was watching it.
“Last year, I upgraded to a prosumer with an 18x zoom lens, but did not manage to see such behaviour again – until today. I had just returned from work at about 7.15pm, and there had been a refreshing downpour in the afternoon. I looked out at the trees to relax, and I saw that familiar dance again – I whipped out my camera, and took a few shots. Unfortunately, as the light was fading, and the birds were diving in and out of the treetops, these are the best shots I can manage. Not sure if there have been any new insights to this behaviour since 2006.”
“I might just add that there were again about a dozen birds that were flying in and out of the canopy of a single mature tree, and I watched the action till about 7.30pm or so when darkness set in” adds Lena.
After three years we are still no better off in understanding such behaviour. It is unfortunate that experienced birdwatchers simply do not observe these bulbuls as they are common. Yet the behaviour of most of our common birds are relatively unknown.