Lepidoptera: Papilionidae
Graphium macleayanum
A couple of hours after watching a Macleay's Swallowtail persistently patrolling its patch without appearing to rest, we came across another.
This one was feeding and slightly easier to photograph as it paused for a second or two at each bloom.
Here it has its proboscis inserted into a Trigger plant flower (Stylidium graminfolium).