Today I was mowing an area I have mowed regularly this summer and found a large hole (about 5 inches in diameter) that had the ground bees that look like small bumbles going into it. First, I haven't seen them at all up to this day and mow that area twice a week. Second, the hole looked like something (skunk, racoon, etc) might have dug it last night since it was so large. Since I have mowed the area with no incidents, my inclination is to figure out how to fill the hole back in and leave it. Can anyone give me some info on what type of bees these are and what the best course of action could be? I don't want to have to force them out but we walk this area all the time and have dogs that go with us I am afraid will get into the bees. Is it possible for them to have just shown up and have actually dug the hole in two days (last time I was down before today was 2 days ago and they did not have the hole then, I could NOT have misssed it) I am totally ignorant on bee habits. Thanks