This summer we cleaned the blackberries up from the side of shed. There had been black plastic spread out as a barrier and weighted down with two car wheel ramps. I yanked the plastic up and this weird thing was protruding from the ground with a hole in it. Suddenly bees were flying out of it, but not just any kind of bee. Large black ones that get the yellow butt. Than slow of brain I realise my situation. I had just torn and yanked the top off a bees nest. The thing protruding out was a nest or comb. I felt bad and went to cover them back up, but it was too late, they were flying everywhere. But when i expected a stinging group of critters to attack, they instead went to collecting from the nest and disappearing. It took 4 hrs to be able to get close enough with gas and exterminate. Is this normal bee behavior or did i somehow do something where they didn't attack? Edit: There was a crying toddler next door over the low chain fence and others sweeping nearby whom also were not harmed. It was mid day, hot. Could i'd somehow taken the queen out?