House Sparrows recorded per party hr on the Honolulu Christmas Count, 1944-2014 (see Count Page), indicating increases during the 1950-1970s following by declines during the 1980-2010s, and a significant decline overall. See also Moulton and Scioli (1986), Williams (1987), and Ralph (1990).


Species account


Literature Cited


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