I recently spent several days in The Black Canyon of the Gunnison National Park, searching for honey bees. This park is located in south-central Colorado, and the rim of the canyon and the surrounding mesa are at about 8,000' in elevation.
Not only were the honey bees few and far between, in all of those days of searching I only saw one.
Of course, that means there was at least one colony of honey bees, but why are they so rare? Could it be because they spray herbicides in the park to control "invasive weeds?" Here's the one I saw:
I did see one other variety of bee in the park: