Honey bee kneading elder bark

Yesterday was unusually warm, dry, and sunny for mid-October. My bees were darting about in the sunshine, but for some reason, they were particularly attracted to this elderberry bush. The bee in the photo was pressing her two rear legs into the bark, one side and then the other, much like a cat kneads with its fore paws. I’ve never seen that behavior before and found several bees all doing the same thing.
Comments
Rusty –
Maybe they were collecting propolis?
Cathi,
I wondered that as well, but I didn’t see any collecting going on, just this strange rocking left and right.
Hmmmm – maybe it was some sort of cleaning behavior? Attempting to clean debris off of their bodies? If I come across any other postings on the internet regarding this type of behavior I’ll let you know. I’m curious too. lol
Cathi,
That would be great . . . I’d love to know what they’re up to.
Well, there are a lot of medicinal claims made for elder in general, and the bark is said to be anti-inflammatory. Never heard anything about joint pain in bees, but it is beginning to be reported that AI’s work by stimulating the immune system. Hmm.
The older “Herb Ladies” including my late Mother, had a vast trove of this kind of information. Now that you have pointed out this behavior, I’ll have to keep an eye on the foragers and see what other reported “healing plants” they land on.
Might be another chapter of “Botany for Beekeepers.”
Nan
Nan,
I did look around the yard at the time, and I didn’t see bees doing this on anything else.
I came across this posting from another beekeeper and it reminded me of this post. It seems to me that your bees just liked the texture of the bark for grooming themselves. http://solarbeez.com/2013/10/30/grooming-on-a-summer-afternoon/
Thank you, Cathi! They never cease to amaze me!