
Japanese Bush-Warblers recorded per party hr on the
Honolulu Christmas Count, 1944-2007 (see Count
Page), indicating fluctuating populations following
expansion into the count circle during
the early 1970s. See also Moulton and Scioli
(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/