classification of birds as aquatic, marine or terrestrial [SEC=UNCLASSIFIED]

[Lynda Chambers <>]

Does anyone have a list (or at least a really good definition) of what an 
aquatic bird is, compared to a marine or terrestrial one. I am attempting to 
classify Australian (& other southern hemisphere) species according to whether 
they are predominantly aquatic, marine or terrestrial as part of a larger 
analysis. Some species I have considered as aquatic include those in the 
families Anatidae (ducks, swans etc), Ardeidae (herrons, egrets, bitterns), 
Podicipedidae (Grebes), Anhingidae (darters), Phalacrocoracidae (cormorants). 
But what about some of the waders, oystercatchers and plovers? Should they be 
considered as aquatic, marine or terrestrial?

Any advice greatly appreciated.

Lynda


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