Fermilab

clouded sulphur butterfly

Too cold!

November 29, 2017 | Jeff Simmons

A clouded sulphur butterfly appreciates the sun's warming rays on this 26-degree Fahrenheit morning. Photo: Jeff Simmons. wildlife, animal, nature, butterfly, insect, clouded sulphur butterfly

A clouded sulphur butterfly appreciates the sun’s warming rays on this 26-degree Fahrenheit morning, Nov. 22.