Maps updated with comments received as of 11 Aug 2010
In the 51st supplement of the AOU Checklist (July 2010), Winter Wren is split into Eastern and Western species. Basic identification of these two species is already covered in the Sibley Guide to Birds, but range maps need to be updated. Below are maps showing the range of each species. These are rough drafts. Please comment here or contact me directly if you have definite information to add to the maps.