Colymbiformes

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Colymbiformes is a disused order of birds that was once used to classify grebes and loons. Scientific study has revealed that these two types of waterbirds are not so closely related; they have been reclassified in the orders Podicipediformes and Gaviiformes, respectively.

Colymbiformes Podiceps cristatus (eating crab).jpg
Colymbiformes

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