One of the earliest bees to appear in the garden is Anthophora plumipes – also known as the feather-footed or hairy-footed flower bee. These are almost bumblebee-sized solitary bees which buzz at high speed from flower to flower. The lungwort (Pulmonaria spp.) in the garden seems a particular favourite!
The males and females are easily told apart by their colour – the males are a gingery brown whilst the females are almost jet black.
I have often seen them visiting flowers, but have never before come across a nest site. At the Barrington Court National Trust property in Somerset, I spotted several of the females investigating holes in the wall of an old stable. There were lots of nooks and crannies in the old pointing of the wall and the bees were flying into these to investigate. If they liked the site, they stayed and began work on excavating, pushing tiny fragments of material out of the hole to create a nest chamber. Often however, the hole seemed not to their liking and they tumbled back out and continued their search.
One of my favourite uses of modern technology is to gain little insights into something usually difficult to perceive – I think this is a nice example. Using the iPhone camera on slow motion video, I managed to get a few shots of the bees leaving the holes. They seem to tumble back and away from the hole and pause for a moment before continuing their search. Whether this is to steady themselves after their rather ungracious exit, or whether this is to conclude their inspection I am unsure, but the behaviour was quite consistent with different bees. The clip also shows how easily these powerful little bees can deal with the cobwebs of spiders which seem to share their taste in residences!
Lots more info on these bees can be found here!