© MasonsAfter an hour the bees clumped together into a 2ft long 'grape' on a nearby 10ft high conifer tree before flying away
Phil Sanderson, 34, said the sound of the insects was the equivalent to "a crowd of people blowing vuvuzelas".
The swarm initially swirled around the father of three's home so loudly that he couldn't hear his partner Serena Reed, 34, talking.
After an hour the bees clumped together into a 2ft long 'grape' on a nearby 10ft high conifer tree before flying away.
Mr Sanderson, a mail order catalogue worker who photographed the bees at home in Pinchbeck, near Spalding, Lincs., said the noise sounded "exactly like being at a World Cup game".
He said: "At first I didn't know what it was, it looked like a black snow blizzard all around the house and sounded like we'd been surrounded by people blowing vuvuzelas.
"But when I saw it was bees I was horrified. It was a bit of a rush to shut the windows to make sure none of them got in.
"I still can't believe it when I look at the pictures, the last thing you expect is to be surrounded by 30,000 bees."
Typical swarming behavior. There is more than one queen in the nest (hopefully), or something bad is going on in their current location, so the hive has to find a new home for the queen and her dedicated female works. Its been a while since I was a beekeeper, so I don't recall exactly, but I think after the new nest is created and stabilized, the females may decide to create a few drones (males) in case they need a new queen using eggs already laid.
Swarms should be left alone and one should be happy to see this event. It'd be great if one were to look out for their best interests too. If they settle in a place you'd rather not have them at, call the local bee keepers association or the department of agriculture. They will be happy to give aide to the bees!