הזיהויים של alpinobombus

Seen in a large field where lots of different flowers have been sown. There were lots of different bees (mainly Honey Bees) and bumblebees.

Looked like a queen searching for a nest site - at this time of the year???

Note last photo, which seems to be showing phoretic or parasitic mites.

Found a bumblebee in Frank's apartment. It had been stuck between two window panes all night and was exhausted. We gave it some honey. The ruler is there for scale!

A queen checking out potential nest sites. Sorry for the unfocused / blurred pics!

Buff-tailed Bumblebee, Erdhummel, Bombus terrestris.