The bumblebee's final straw

Backblip from Monday. Out walking the dog early on Monday morning, I saw this bumblebee (which I think is a buff-tailed bumblebee worker, despite its white tail!) clinging halfway up some grass stems. My suspicion is that it was trying to warm up in the sunshine after a cold night. It wasn't for moving, which helped me move in for a photo! I do love bumblebees!