Common (Hawaiian) Moorhens recorded per party hr on the Kapa'a Christmas

Count (see Count Page) in 1971-2014, showing a significant increase from 2002 to 2014. Fluctuations in populations, similar to those on the Lihue and Waipi'o Christmas Counts, are related to rainfall levels in the state. Wetter periods (such as 1976-1984 and 1991-1996) are more favorable for moorhens than drought periods (see also Hawaiian Coot and Hawaiian Stilt).


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