The official name of this exquisite bird just seems wrong! How can anything so beautiful be “lesser” to anything?
They are found exclusively on the island in New Guinea in the northern half of the island. The similar looking larger Greater Bird of Paradise is in the southern part of the island. For the eco-tourist, your best chance of seeing one is going with a highly skilled guide such as Pak Jamil in Nimbokrang. I didn’t get a good look at one as during our visit they stayed deep in the trees but we could hear them calling.  Birding is never a sure thing, sometimes you get lucky, sometimes you don’t. They do stay in their display area but sometimes the trees block your view and I didn’t have the gear to slosh through the mud to get a better view.
This video shows their beauty up close!