Hello from Germantown

With all of the discussion on the Nashville warbler and the possible sub-
specie disctinctions, I have a question.

At times I have been interested in finding the scientific name of a 
particular subspecies. However, I have not found them. Sibley's doesn't 
list scientific names and neither have I found a website for them. Does 
anyone have a suggestion on how to find these scientific names?

And while we're on the subject, what is the difference between a sub-
species and a race?  The "yellow-shafted" and the "red-shafted" are 
subspecies of the northern flicker. Then there's the Eurasian "race" green-
winged teal.  Are they different?

I'll be interested in your answers.

Joy Peters
Germantown, MD