Honey bees seem to be attracted to the chemicals that are killing them. based on experiments showing the bees preferred sugar water laced with chemicals known to cause problems for bees over sugar water alone. These findings published in the journal Scientific Reports suggest that herbicides and fungicides pose a greater risk to pollinators than previously assumed.
Scientists found that forager bees were drawn to the fungicide chlorothalonil and the herbicide ingredient glyphosate, found in Monsanto’s Roundup, at certain concentrations.” – Honey bees Love Chemicles That Are Killing Them
The nectar that a bee brings back to the hive will effect on the health of the entire colony. Insecticides have been shown to shorten the lifespans of exposed bees and disrupt organization of the hive. Past research shows that chlorothalonil can inhibit a fungal parasite called Nosema bombi that affects bumblebees. Glyphosate has been shown to potentially affect the ability of bees to navigate.
The bees are not only not avoiding this fungicide [chlorothalonil], they’re consuming more of it at certain concentrations. People assume that fungicides affect only fungi, but fungi are much more closely related to animals than they are to plants. And toxins that disrupt physiological processes in fungi can also potentially affect them in animals, including insects.” – May Berenbau
The bees in the study were given the choice between a plain sugar syrup and a sweet mixture blended with several fungicides and herbicides at different concentrations. There were also feeders with the sugar water mixed with naturally occurring chemicals.