Went out yesterday to hitch the 6' finish mower up. While trying to hook the fist link up, I saw a Bumble Bee, then two, then ten, then ALL of them. Evidently the Bumble Bees had built their next under my mower's deck and they preferred that I not use it until they were done with it as housing. Never seen but a stray single bumbler anywhere before, first time I've ever seen a swarm. Had to abandon tractor, still running, and make a run for it. I went back in finally and got loose of the mower and dug it out with the front end loader to take it away to hitch up safely away from their nest. Luckily only got stung once in the back of the head. Watch out for those bees and wasps that might make homes in your lesser used implements.