Spotted Doves recorded per party hr on the Honolulu
Christmas Count, 1944-2007 (see Count
Page), indicating significantly increasing
trends followed by an apparent decline during the 2000s. See
also 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/