Butterflies were very active in the garden this afternoon, while the winds were increasing as Tropical Storm Claudette headed for the Florida Panhandle.
As the storms approach, butterflies are threatened. Not only does rain pose a direct threat of injury or death, but the cool air associated with storms may also reduce temperatures below the thermal threshold for butterfly flight. In preparation for flight, butterflies expose their wings to direct sunlight, which rapidly warms their flight muscles.
Sometimes butterflies become dormant during periods of extreme summer heat. This is called estivation. They again seek shelter, but in cool places.