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The Lady Bird Johnson Wildflower Center Fauna Project |
Despite the sunshine, the morning remained chilly and windy as five people conducted this week's survey. The flight muscles of butterflies must be at a high enough temperature for them to function, so those species that are active in the winter usually have very hairy bodies to help retain the heat that they absorb from the sun. The Common/White Checkered-skipper pictured below is a good example.
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