Date: Around 1993
Is a mallard lard more closely related to a grebe than it is to a
I am not an ornithologist so my guess means little. It seems to
me that geese and ducks are more closely aligned than either are to grebes,
but I do not know. A good reference to check is "Phylogeny and Classification
of Birds": A Study in Molecular Evolution by CG Sibley and JE Ahlquist.
There has been few works done on the systematics and phylogeny of birds.
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Update: June 2012