Did you realize that the number #1 enemy that does the most damage to our natural pollinators is not other larger insects not birds but Man.
Man destroys natural habitats of pollinators for our housing. Man destroys food sources by producing genetic modified plants that do not need pollination. As bad as that is...such actions do not destroy a healthy thriving colony of honeybees or kill healthy solitary pollinators.
In our zeal to have beautiful flowers and garden produce... that is without damage from various insects or diseases... we actually harm our pollinators.
The use of highly effective powder insecticides sprayed on flowers creates situations where foraging pollinators unknowingly bring the chemical back into their colony or nest in contaminated pollen and it is incorporated into the brood food effectively killing the young larvae.
Highly effective systemic insecticides (such as Neonictinoids) are translocated into the nectar of the flower creating a similar situation.
Fortunately, the use of these chemicals is usually isolated to suburban areas and farm land. However, especially for beekeepers in those areas such product use can be devastating with total colony losses.
The use of pest control chemicals is necessary to avoid disfiguring of flowers and destruction of fruits and vegetables.
To help reduce damage to our pollinators use only liquid contact insecticide, never powder types, and avoid systemic insecticide totally.
Apply only in the evening and never on the flowers.
We all must do our part to protect and encourage our local pollinator populations. Remember...the pollination role they perform cannot be replaced by human inventions.