These butterflies have been passing through the region in huge numbers in recent days. This phenomenon is not confined to the Ottawa region, but is seen throughout the Maritimes, Quebec and points south. It is always such a treat to see this kind of natural phenomenon, where countless numbers of butterflies can be found, albeit for a short time. These butterflies are migratory, as are the red admiral and american lady butterflies, and of course, the well-known migratory monarch!