Biological traits that predict diversificationratesin birds

["Graham Turner" <>]

Firstly because our taxonomic system isn't based on caldistics. I am sure 
Carl Linnaeus had never heard of cladistics.
Taxonomy does not tell us what birds are ominvorous or are mobile. These 
traits came first, then the birds were slotted into taxa. Thus it becomes 
bleeding obvious that the reson these birds are grouped together is that 
they are similar. If a trait is successful then the group will be diverse, 
if not then it will be limited to a few species.
A taxon that is mobile and has a broad diet will spread far and wide, with 
lots of opportunites for diversification and to form new species.
Graham Turner