Red tailed bumble bee nest

As well as the fascinating solitary bees, we also have a red tailed bumble bee nest in our garden. They are nesting in a hole in the side of the workshop, which I guess goes into the cavity between the walls which is filled with insulation.

Red tailed bumble bees are also very important pollinator species, including soft fruit. They are a common visitor to our garden, but it is the first time I have noticed them nesting.