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strong colonies from May-August could easily reach over 70,000 to 180,000 foraging flights per day!
= 125,000 average. If each bee made 12.5 trips per day, that's 10,000 bees, or about 3 pounds of bees. Which is the number of foragers that Koulichkov calculated as leaving a hive from 4:45am to 8:45am, when the weight began to rise. This number was also reached by summing the hourly weight changes and subtracting the weight gain at the end of the day.
Koulichkov, N. N. (1971). Method for determining number of foraging bees in the field. American Bee Journal. July 1971, p 268-69
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