Savor the Moment
One of the most overlooked yet most spectacular fall butterfly migrants is the Cloudless Sulphur. In the Southeast you can see masses of these gorgeous greenish-yellow butterflies. They use the sun to guide them during their travels. They tend to fly lower than the Monarchs so they are easier to spot.
Like most migratory butterflies, the Cloudless Sulphur is heading to a warmer climate for the winter season. In late summer the Cloudless Sulphur begins to head south from as far north as southern Canada. It is a rather leisurely journey since they only travel about 12 miles a day. The males tend to move a little faster because it is thought that the females are conserving valuable energy reserves for egg laying. See my post about one of its host plants, the Partridge Pea to see some photos of the butterfly in the larva stage. Typically they breed in disturbed open areas where they find their host plant which includes several varieties of plants in the pea family. See Red House Garden's post here for an excellent example of this habitat.
The Cloudless Sulphur has a rather long proboscis (see photo below) and can therefore reach the nectar of many tubular blooms that are inaccessible to many other butterflies.