In winter, honey bees cluster together for warmth. They shiver their wing muscles to generate enough heat to keep the queen warm at the center of the colony — between 85° and 93°F (29° – 34°C)! The cluster remains active all winter, moving through the hive and eating stored honey.
These images were taken January 1, 2019, at Tulip Tree Honey (Huntington, Indiana) with a borrowed FLIR C3 thermal imaging camera.