Any Info About Fiji’s ‘Manusa’ Bird?

The banknote carries a reproduction of the Queen, a canoe masthead symbol of Reserve Bank…

Front : Fiji (2002)$10

Back : Fiji (2002) $10

…. Manusa bird on front, left bottom. A quick google on this bird did not produce any details about this bird. Any ideas anyone?

On the reverse is the Parliament House and Reserve Bank building. The sginature is Savenaca Narube’s Governor, Reserve Bank of Fiji.