Where are they?

A garden patrol today presents a mystery - where are all the honeybee workers foraging?

They aren't on this lupine....

Or this one....

They aren't on the purple vetch....

Or the purple tansy....(see the purple pollen?)

They aren't on the cinquefoil....

Or the anthemis....

They aren't on the sweet alyssum....

They aren't even on the clover.

Aha!  Here is one, at least - on the raspberries!