Lots of calls at this time of year are about bumble bees. These bees are furry and make small nests every year then the queen hibernates over winter. Click on the picture for some frequently seen types.

The nests can be at ground level, in sloping ground or compost bins. Some species like the "Tree" bumblebee above nest in old bird boxes or under eaves. The nests are small and although you see some of the workers coming and going, they rarely sting even if they bump into you. That is providing you don't try to interfere with the nest or catch them. Enjoy watching them visiting the flowers around you and their breeding cycle will be over in a month or two. If they are somewhere inconvenient you can make sure the entrance is blocked over winter so they have to find somewhere else next year.