Here is a handy chart. They recommend 180 degrees for a whole bird (probably a bit too high IMO, look at their ground poultry recommendation) - and I think these are all instantaneous temperatures. Also, this is the innermost (coolest) part of the bird we're talking about, so you'd need a meat thermometer to measure it accurately.
It's been my experience that people tend to overcook poultry (and pork too, for whatever reason). White meat should never be dry when it is cooked correctly.