What is the species of the bumble bee?
According to Wikipedia, there are hundreds of species. See Related Links.
Both the honey bee and the bumble bee populations have been falling in recent years. There are very few wild colonies of honey bee now in most parts of the world because of parasites like the varroa mite. It really only the efforts of beekeepers that are really keeping them going. As for the bumble bees, quite a few species are on the endangered list and a number have become extinct in recent years.
A bumble bee is a bee -- just a different sort of bee. Bumble bees do collect nectar and make honey, but not in large enough quantities to make it worth harvesting. However bumble bees are excellent Pollinators, so bumble Bees can be worth keeping. Farmers will pay you money to lend them your hives for the season so that the bumble bees pollinate their crops.