The only other times I have seen Winter Wren in the United States it has been the "Western (Pacific)" Wren, two migrant birds observed in different years in the vicinity of Connected Lakes State Park in Grand Junction, Colorado. These birds are told apart by being noticeably darker and possessing a different song from their Eastern cousins. Recent studies show that are probably different species, and in the coming years will probably be split into two separate species. It will be interesting to see how many species the "Winter Wren" becomes in the future. It is currently the only wren known from the Old World, and studies may prove that the population I saw in Ireland and other scattered European, Asian and North African populations are isolated species of their own.
Again, I apologize for the brief post, but school has been keeping me busy. I will try to post more things (and more interesting things) in the near future. Until then, good birding!