"To fill her honeystomach the bumblebee may have to suck nectar from 60 flowers, and to find these 60 she may have to visit 100 or more. Then she will return to the nest, which may be as much as two miles away. So providing a supply of nectar for her nestmates would not be possible without the honeystomach to carry it in. A teaspoon holds about 5 ml and nectar is about half water, so to fill a teaspoon of honey a small bumblebee might need to make over 80 foraging trips, flying up to 320 miles, and sucking 80,000 flowers."
