Red Avadavats recorded per
party hr on the Waipi'o Christmas Count, O'ahu, 1977-2014 (see Count
Page), showing a peak during
1985-1990 followed by a decline, probably due to changes in habitat. 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/