evidence: Nearly every country or region has an area on its periphery that regularly attracts a tantalizing assortment of vagrants or a set of species that just barely make it over an international border. Understandably, these sites are particularly attractive and important to birders working on a regional list. For others, it is the desire to have a different birding experience from home without needing a passport. In the ABA region, southeast Arizona and the lower Rio Grande Valley of Texas host many sites right along the Mexican border that fit this description. Every year, birders in both of these states find species more typical of Mexico (and sometimes within plain sight of Mexico!) while also adding a wide assortment of specialties to their ABA lists such as Northern Beardless-Tyrannulet, Gray Hawk, and Green Kingfisher. Thailand also has a site where birders go for very much the same reason that Americans go to Bentsen-Rio Grande State Park or the Chiricahuas. It is called Doi Lang, a mountain with a winding road that flanks the Burmese border in far northern Thailand that has affinities to the Himalayan foothills further north and west. [...] Doi Lang is the most reliable site in Thailand to see the stunning Scarlet-faced Liocichla.