Bumble Bees Under the Eaves

I have often blogged of my affection for bumble bees and the need to ensure their survival in a world of changing climate, insecticides and vanishing habitats.  We have never created a 'bee hotel' but now find ourselves hosting a 'bee hostel' as bumble bees have decided to nest this year outside our front door under the eaves of the porch.  Now they are in residence, buzzing in and out of what we presume is a gap in the woodwork.

Of course we can't get rid of them or remove them to another location.  They do not sting.  It is handy to have them close by to pollinate our fruit and vegetables; they appear to have gone for this option rather than the opening of the kitchen extractor fan, which is a relief; and they stay several feet above our heads circling and entering their nest and not causing annoyance to postmen or visitors.  

We are hoping for the best as regards this entry crevice, but will not be investigating further until they have all gone over the winter.  Then I think it will be appropriate to get the old bird box out of the shed and fix it somewhere enticing.  Our birds nest in the hedge.  Our bees are welcome close to the house, but not actually in it.