A lovely passage from A Recipe for Bees, a novel by Gail Anderson-Dargatz.
"Most bees dies outside, while foraging. But some die inside the hives. The undertaker bees carry the dead body through the hive and deposit it outside the opening. They leave it there a day or two until it's dried out a bit, so it's lighter. Then one of them collects the dead bee and flies into the sky, away from the hive, where it drops the body. Isn't that a fitting funeral for a bee? A sky burial."
Describes my bees' recent behavior perfectly.