New observations suggest that honeybees stealing pollen from bumblebees may be a crime of opportunity, though documentation of it remains rare.
Apidae: A Family Of Social & Sometimes Stingless Bees
Are bumble bees meaner than yellow jackets? - Quora
What is the difference between a bumblebee and a wasp, as I'm not sure if Australia even has bumble bees? I just need some photos of the difference. - Quora
Bumblebees: how they fly in low temperatures - Saga
Silence of the Hives, Arts & Culture, Spokane, The Pacific Northwest Inlander
Honey Bees – My Journey of Discovery
Power lines may mess with honeybee learning and behavior
Are bumble bees the same thing as normal honey bees? - Quora
All about honeybees - Welcome Wildlife
Some honeybees in Italy regularly steal pollen off the backs of bumblebees
Can bumblebees make honey? - Quora