This pretty looking bird is a Crested Pigeon. It is native to Australia and is commonly seen on the mainland. It is often mistakenly referred to as a Top Knot Pigeon which is a completely different bird. The Crested Pigeon is about 30cm in size and is predominantly a light grey colour with a pinkish brown colour on its back and with a thin black crest on its head. The wings have black bars and a patch of green and purple feathers on each side, which look shiny and metallic in the rays of the sun.
This pigeon makes a “whoop” sound which is quite soft but you can hear it in this video.
When the bird takes off in flight it produces a loud distinctive whistling noise which is made by air passing over a primary feather on its wings. Some researchers say that there are two distinct whistling sounds made by this bird – one is a general flight sound and another is a predator alarm. My own observations of this bird seems to show this as being the case, as when I watched a bird fly away, the sound was a lower tone compared to the higher pitched whistling noise made when I scared one and it took off in fright. Below is a video showing a bird taking off when startled and you can hear the whistling noise as it flies away.
You can easily tell you are watching a Crested Pigeon by its tell tale action of swinging its tail high in the air upon landing as seen in this video.
This bird is a seed eater and is regularly found in suburban gardens perched on rooftops, fences and overhead wires. I have seen six of these pigeons hanging around our place but they are very easily startled so getting any footage of them has been difficult. Below is a close up video of a Crested Pigeon which shows some nice details of feathers and colours.