Common Waxbills recorded per party hr on the Honolulu
Christmas Count, 1944- 2014 (see Count
Page), indicating increases from 1990 to 2014
following expansion from initial establishment in w. O'ahu
in the 1970s. Fluctuations between years since 1990 may relate to inter-annual
variation grass seed production. 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/