Female bumblebees have stingers without barbs and can sting repeatedly whenever they feel threatened or alarmed. Avoid getting stung by remaining still when confronted by a curious bee, and do not swat at it.
Bumblebees build colonies in the ground. Wear shoes to avoid stepping on a colony in bare feet. Do not wear perfume or brightly colored clothing to a flower garden as these attract bumblebees.
Bumblebees commonly rely on the sun's heat to warm their muscles to 86 degrees Fahrenheit, because that temperature is necessary for flight. Bumblebees also vibrate their muscles to heat them, which creates a humming sound.