Prepare to be bored.
There are 6 sub species of sharptail grouse.
Each subspecies' morphology is subtley different.
The Colombian sharptail grouse developed on what is called the Columbia plateau, which is the hi grassland shrubland intersect West of the continental divide
They are a bit smaller than their cousins, with more contrast in their markings.
Named for the, you guessed it, the Columbia river system by Lewis & Clark.
Which is why I think they are cool.
The plains sharptail is east of the cd.

Out there doing it best I can.