Posts Tagged: nectar robbing
We all take shortcuts.
We look for the shortest line at the supermarket, we use keyboard shortcuts, and we text ”how r u?”
So, why shouldn't honey bees use shortcuts? They do.
If you've ever watched a carpenter bee drill a hole in the corolla of a tubed flower to get at the nectar—this is "nectar robbing" or bypassing pollination—you may have seen a honey bee come along and sip nectar from the hole. Why work hard to get at the nectar when it's right there for the taking?
This is the insect version of a convenience market!
Take the foxgloves (family Plantaginaceae, genus Digitalis). Sometimes you'll see a honey bee trailing or shadowing a carpenter bee that moves from corolla to corolla.
Short cut to the nectar!
A honey bee sipping nectar from a hole drilled by a carpenter bee on a foxglove. (Photo by Kathy Keatley Garvey)
A Valley carpenter bee about to drill a hole. (Photo by Kathy Keatley Garvey)
You've probably seen carpenter bees engage in the practice known as "nectar robbing."
Due to their large size, they cannot enter tubelike blossoms such as salvia (sage), so they slit the base of the corolla. They rob the nectar without pollinating the flower.
But have you ever seen a honey bee come along and enter the very spot of a corolla that a carpenter bee has pierced?
We saw a honey bee do just that at the UC Davis Arboretum last weekend.Maybe this UC Davis bee was "smarter" than the average bee?
Carpenter Bee Robbing Nectar
Honey Bee Robbing Nectar