Java Sparrows recorded per party hr on the Honolulu
Christmas Count, 1944-2014 (see Count
Page), indicating increases during the 1980s
followed by a general decline from 1990 to 2010 followed by an increase. 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/