This species was previously known as the Chestnut or Black-headed Mannikin. Formerly lumped with Tricolored Munia (L. malacca), they were introduced in Hawaii in 1959 and are now established in all the main islands. The subspecies introduced in Hawaii appears to be L. a. jagori of the Philippine Islands, although the nominate race from India has also been reported. L. a. jagori is characterized by having a brownish crown and nape as seen here. Juveniles are similar to Scaly-breasted Munia but have a bluish rather than black bill. Canon PowerShot SX60 HS.
References:
Clement, P., A. Harris, and J. Davis. 1993. Finches and Sparrows: An Identification Guide. Princeton Univ. Press, Princeton, N. J.
Payne, R. (2020). Chestnut Munia (Lonchura atricapilla). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/61195 on 28 January 2020).
Pratt, H.D., Bruner, P., and Berrett, D.G. (1987) A Field Guide to the Birds of Hawaii and the Tropical Pacific. Princeton University Press.
Pyle, R.L., and P. Pyle. 2017. The Birds of the Hawaiian Islands: Occurrence, History, Distribution, and Status. B.P. Bishop Museum, Honolulu, HI, U.S.A. Version 2 (1 January 2017) http://hbs.bishopmuseum.org/birds/rlp-monograph/