Red-billed Leiothrixes
recorded per party hr on the Honolulu Christmas Count, 1944-2007 (see Count
Page), indicating a decline during the
1940-1960s to absence in the 1970-mid 1980s followed
by a slow recovery in the 1990-2000s. See also Moulton and Scioli
(1986), Scott et al. (1986), Williams (1987), and Ralph (1990). Graphs of Christmas Count data
developed as part of The Birds of the Hawaiian Islands: Occurrence, History, Distribution, and
Status by Robert L. Pyle and Peter Pyle http://hbs.bishopmuseum.org/birds/rlp-monograph/2009/