OF SOUTHERN AUSTRALIA. 199 



Less.), Plumed Egret {Mesofhoyx plumifera, Gld.) Those 

 which hide in the swamps, and are equally useful, are the 

 Bitterns, the birds of the booming note. 



Nest. — A fiat structure of sticks and leaves placed upon a 

 small horizontal fork or in a broad upright fork of a fairly 

 large tree. 



Eggs. — Four to a sitting ; uniform bluish-green colour. 

 Length, 2 inches ; breadth, 1.4 inches. 



