Yellow-faced Grassquits recorded per party hr on the Waipi'o Christmas Count, O'ahu, 1977-2014 (see Count Page), showing fluctuation (perhaps related to grass seed production) as well as a significant decline through the period.


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