Thursday 11/29 at 7:35 a.m. I saw a Green-breasted Mango in Dublin, GA. The bird has been around since October. It is coming to feeders at 224 and 226 Brookwood Dr Dublin, GA. 
There is also a Rufous Hummingbird present and a Black-chinned Hummingbird a short drive away.
This is apparently the 3rd sighting of a Green-breasted Mango outside of south Texas.  
Information can be found at Georgia Birds at 
http://www.listserv.uga.edu/archives/gabo-l.html

Joe Hanfman
Columbia, MD