Red-whiskered bulbul

Red-whiskered bulbuls (scientific name: Pycnonotus jocosus) can be seen in Singapore if you look hard enough. They are recognised by their an upright black crested head and crimson red patches under their tail and on their cheeks(which are adorably also called "whiskers").

Photo taken from Singaporebirds.blogspot.sg

 
I myself have never seen it until it was under my block one day, below a tree. I managed to capture it with a zoom lens camera.

According to the book "The naturalist guide to the birds of Singapore", this bird is an uncommon resident of Singapore, and originate from escapes. It is also noted that its population started in the 1910s, but is "continually supplemented by recent escapes, since the species is popular as a pet bird here." Interestingly though, it is usually seen in pairs but recorded small flocks of as many as 20 have been seen.  Reportedly, its nesting is from April to May. 

The Red-whiskered bulbul feeds on fruits such as berries and figs, on top of seedlings and flower buds. It also feeds on insects that are on trees, branches or on the ground. 

In fact, this bird was featured on S$5 notes of the "Bird Series" currency notes released by the Monetary Authority of Singapore between 1976 and 1984. 

You can listen to the sound it makes here. (Video taken from Youtube)