After searching the birds since 2010, finally, I was able to find their dancing site located in he territory of Warmarway village. It is a 1-hour ride from Manokwari town. There four or five trees that have been chosen by the birds of paradise as the place where they perform courtship dance in the mornings and in the afternoons just before sunset. The trees stand on a hill with steep slope. I've got a blurred photograph of the male that I shot using Nikon Coolpix P500. I hope that I can make better pictures in the future.
I recommend Alice Auri (English speaking guide) who can arrange and guide birdwatchers in Warmarway. Her cell phone number is +6281248525116. So, if you are interested in coming to Manokwari town to watch the birds, don't forget to contact her. If she is busy, you could contact Yunus Sayori +6281343316087. He is the villager of Warmarway who can bring you to the birding site. He also can call owl and cuscus at nights. A lot of species of plants in the jungle of this Arfak mountains including bamboos, big trees, orchids, and glowing mushrooms.