Bumblebees seem to be active later in recent years. Some years I've seen them in February. This year, the first queen appeared in March and it took me weeks to get a photo. The large black and yellow bumblebees are very active, rarely sitting on a flower. They are aggressive if I get too close. They around and around,bumping me until I move.
|Possibly Bombus vosnesenskii on red-flowering currant|
|Possibly a flower fly on piers|
This little fly is well behaved compared to the bumblebee. It actually perched for a few moments.