This ones in Hawaii but it’s everywhere fields are sprayed and pesticides likely the cause of bees being killed off.
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0198876
French beekeepers accuse Bayer after glyphosate found in honey
https://www.google.com/amp/s/www.thelocal.fr/20180609/french-beekeepers-accuse-bayer-after-glyphosate-found-in-honey/amp
A recent study from Boston University and Abraxis LLC, found glyphosate, the main ingredient in Monsanto’s Roundup herbicide, present in honey. The study found that both conventional and organic honey contained glyphosate, specifically 62 percent of conventional honey and 45 percent of organic honey.