I have a nest of bumble bees (I assume it is a nest because there are always 7 or 8 hovering around) that is about 20 feet from my hives. I love to watch them and would never kill them UNLESS they were a danger to my hives. So far, the bees seem to keep the big bumbles out of the hive.
I have Carpenter bees as well. I went into one of my outbuildings and saw what I thought was a bumble bee but it was making a small hole in the 2x4.
Im even thinking about getting a bumble hive (they are sold for farms and are in boxes) they run about 65. bucks.
Is this just for pollination? Don't they all (except queen) die come winter?