There is a lot of research going on at the moment with Ornithologists and Entomoligists with respect to the drop in populations of the birds and insects. True, that Neonicotinoids are having an effect.as they are residual and far from breaking down quickly in the soil are staying active for up to 24 months. It is also appearing in pollens from treated plants.
Now, there is a food chain that stretches through all vertibrates and insects that prey on each other and a parallel is the pesticide DTD which all but wiped out raptors. Now we are told that all sorts of medical chemicals are appearing in the drinking water and one is the drug used for Epilepsy! Also that the birth pill hormones are making fish and frogs neutral gender.
Bumble bees are just as prone to the pesticides as any other insect, this year I counted about 20 Bumble bees on the Lavender, but this years count is less than half of last years count. There were a lot less insects on the last flowering nectar bush, Ivy, this year, normally covered in every insect you could think of, plus butterflies.
Something is up and I dont know what.
Clive