I have Bombus Hypnorum nesting in the bird box in the garden. Today, I found three bumblebees that were dismembered. One’s head had come away (and it was sitting a few milimetres from their body) and soon after found another one that was missing their abdomen (again, nearby). Another’s leg was sitting next their body.
All in all I found about 6/7 dead bumblebees, 3 of which had been dismembered in some way.
Are ants chewing up my dead bumblebees?