Earth ChangesScientists identify culprit behind biggest ever U.S. honey bee die-off Posted on July 13, 2025 by Administrator U.S. beekeepers had a disastrous winter. Between June 2024 and January, a full 62% of commercial honey bee colonies in the United States died, according to an extensive survey. It was the largest die-off on record, coming on the heels of a 55% die-off the previous winter.