Protect your butterflies from the wind.
If your backyard is subject to breezy conditions, think about how you can provide the butterflies with protection from the wind. If it takes a lot of energy for the butterflies to battle the wind currents in your backyard habitat, the site won't be as beneficial to them for gathering nectar.
Melitaea athalia, Mélitée du mélampyre ou Damier Athalie, Heath Fritillar
Try to site your nectar and host plants where the house, a fence, or a line of trees will buffer the wind. If needed, provide a windbreak by planting taller shrubs or trees to block the prevailing winds from your butterfly garden.---> http://insects.about.com/od/butterfliesmoths/ss/10-Tips-For-Attracting-Butterflies-To-Your-Backyard.htm