Northern Mockingbirds recorded per party hr on the Honolulu Christmas Count,

1944-2007 (see Count Page), showing peak numbers during an expansion phase in

the 1960s followed by a steady decline in numbers during a withdrawal phase

through the 2000s. See also Ralph (1990).

 

 

Species account

 

Literature Cited

 

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/