White-rumped Smamas recorded per party hr on the Honolulu Christmas
Count, 1944-2014 (see Count
Page), indicating an expanding population in
the 1970-mid 1980s followed by a decline from the late 1980s to 2010,
and variable populations in the eraly 2010s. 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/