Cattle Egrets recorded per party hr on the Lihue Christmas Count, Kaua'i, 1972-

1992 (see Count Page). The data indicate an increase from 1975 to 1985 follwed by

a decline, similar to what was seen on the Kapa'a Christmas Count after initial

island-wide expansion in population and abundance, beginning with release in1959

and peaking in the early 1970s. Despite the declines, Cattle Egrets remain a common

sight in Hawaii and are regarded as pests, posing hazards to aircraft and predating

the nests of native waterbirds.

 

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/2009/