Honeybees better after bad year

American honeybee colonies have bounced back after a bad year, the annual beekeeping survey finds.

Beekeepers only lost 22.2 percent of their colonies this past winter, from Oct. 1 to March 31, which is lower than the average of 28.6 percent, according to the Bee Informed Partnership’s annual survey of thousands of beekeepers. It was the second smallest winter loss in the 14 years of surveying done by several different U.S. universities.

Last winter’s loss was considerably less than the previous winter of 2018-2019 when a record 37.7 percent of colonies died off, the scientists found. After that bad winter, the losses continued through the summer of 2019, when beekeepers reported a 32 percent loss rate. That’s much higher than the average of 21.6 percent for summer losses. Those summer losses were driven more by hives of commercial beekeepers than backyard hobbyists, said bee partnership scientific coordinator Nathalie Steinhauer.

While the summer losses are bad, winter deaths are “really the test of colony health,” so the results overall are good news, Steinhauer said. “It turned out to be a very good year.”

Populations tend to be cyclical with good years following bad ones, she said. The scientists surveyed 3,377 commercial beekeepers and backyard enthusiasts in the United States.

“One would hope that a lower winter loss means a better 2020 assuming that the weather cooperates and beekeepers don’t end up skimping on colony management,” said University of Montana bee expert Jerry Bromenshenk, who wasn’t part of the study.

For decades scientists have been watching the population of pollinators — crucial to the world’s food supply — shrink.