Just so you will know, at the bottom of this page there is a link to a browser. You can type in any bird and it will give you a map of its range, not that it locks that bird into that range, but it will give you some idea. Or Cornell University has a link to maps of a birds range, several times it has differed slightly than on here..... but basically the same.
Its nice to look at, gives you all sorts of information about each bird.
Itsjustdeb