Cattle Egrets recorded per party hr on the Waipi'o Christmas Count, 1977-2014

(see Count Page). As on the Honolulu Christmas Count, the data indicate initial island-wide expansion in population and abundance beginning with release in 1959 and peaking in the early 1970-1980s, followed by a decline but, unlike other counts in Hawaii, populations rebounded again during the 2000-2010s.


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