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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