Posts Tagged: digger bees
But there's one thing they don't do. They don't check out the sand dunes, home of the bee villages.
Tiny holes are everywhere, yet nobody seems to notice.
They're the work of digger bees, aka faux bumble bees. These are Anthophora bomboides stanfordiana, researched by native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis.
"The (female) bees suck up water nearby and then regurgitate on the (faces of the) sandstone cliffs to moisten and excavate soil for the tunnels, construct their turrets, and finally to seal the nest tunnel," Thorp says. The bees use some of the soil from the base of the turret to plug the entrance.
The bee turrets are somewhat like our gated communities! Keep out!
The digger bees have "grocery stores" all around them. You'll see the males and females foraging on the wildflowers, which include yellow and blue lupine, California golden poppies, wild radish, mustard, dandelions, and seaside daises.
If you crouch next to the bee villages, a nearby hiker is likely to ask "Lose something?"
No, we found something!
A female digger bee finishes her nest. (Photo by Kathy Keatley Garvey)
A digger bee scouts the landscape. (Photo by Kathy Keatley Garvey)
Flying low, flying fast. (Photo by Kathy Keatley Garvey)
Sandy cliffs of Bodega Head hold bee villages. (Photo by Kathy Keatley Garvey)
They can fool you.
Just like replica designer bags, shoes and sunglasses meant to look like the real thing (think Louis Vuitton, Jimmy Choo and Prada), those digger bees on Bodega Head, overlooking Bodega Bay, look like bumble bees.
Especially the females.
Native pollinator specialist Robbin Thorp, emeritus professor of entomology at the University of California, calls them "faux bumble bees."
They're Anthophora bomboides stanfordiana. "The females are the ones that build the neat turrets in front of their nests on the cliff faces," Thorp says. "The females are even better mimics of bumble bees and they do not sting!"
So, if you're visiting Bodega Head to watch the whales, the waves, the birds or the boats, be sure to check out the sand cliffs for the bee villages.
If you want to capture their images, you'll want to lie flat and motionless on the ground, position your trigger finger, and frame them flying in and out of their turrets.
Soon you'll be visiting Bodega Head to see the whales, the waves, the birds, the boats AND the bees.
Female digger bee, Anthophora bomboides stanfordiana, heads for her nest. (Photo by Kathy Keatley Garvey)
Packing pollen, a female digger bee, Anthophora bomboides stanfordiana, crawls into her nest. (Photo by Kathy Keatley Garvey),
Outline of sand cliff with female digger bee heading home. Note the turrets these bees build. (Photo by Kathy Keatley Garvey)
The male digger bee, Anthophora bomboides stanfordiana, looks less like a bumble bee than the female. (Photo by Kathy Keatley Garvey)
They're populating the sandy cliffs of Bodega Head, Sonoma County. A sure sign of their presence: dense clusters of turrets.
When they're not foraging among the wild radish (genus Raphanus), lupine (genus Lupinus) and other plants, these ground-dwelling bees are digging nests and rearing their young.
"The female sucks up fresh water from nearby, stores it in her crop--like honey bees store nectar--for transport to the nest," said native pollinator specialist Robbin Thorp, emeritus professor of entomology at the University of California, Davis.
"She regurgitates it on the sandstone, and excavates the moistened soil," he said. "She carries out the mud and makes the entrance turret with it."
The digger bees are sometimes referred to as "alternative pollinators," but they're all members of the Apidae family, which includes honey bees (the super pollinators), bumble bees, carpenter bees, sunflower bees, orchid bees, cuckoo bees and the like.
Building a Nest