Although a full crop load is ca. 50-60 microliters, I have measured the crop contents of a large number of foragers that were attempting to return to their hives, and in my measurements crop loads of anywhere from 15-30 microliters were more common than the larger loads. I am sure that it depends on local conditions, but certainly the maximum load is often not what they are carrying. Steve A. Kolmes [log in to unmask]