Ruddy Turnstones recorded per party hr on the Honolulu Christmas Count, O'ahu,

1949-2014 (see Count Page). The decline during the 1950s-1970s, and increase

during the 1970s-2010s could reflect either population dynamics (e.g., perhaps

related to Pacific Decadal Oscillation) or it might reflect changes in foraging habitat

in se. O'ahu.

Species account

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/