With the tele-converter lens on this camera, 72 mm is stretched out max. and equates to 734.4 mm
Well there's the technical bits done, Ocyphaps lophotes, is the scientific name for the handsome Crested Pigeon. My, I admire ornithologists who can rattle those names off the tips of their tongues; some achievement remembering the spelling and the pronunciation.
This bird generally is timid in nature, so having the extra zoom sure does help to pick up a reasonable snapshot. Not only do they look quaint, but they have a very quaint call too; a very distinctive (and explosive, my bird book says), 'whoop' voice.
Another little oddity is when they take flight, there is a very recognisable whistling sound. According to Birds in Backyards this sound is bought about by the air passing over a modified primary feather on the wing.