We have rough sawn cedar planks as trim on the outside of our house. The other day I noticed a very large bumble bee flying into a hole. I'm sure the bee made this hole as it wasn't there a few days ago. There is also a spot a few inches away where it looks like another hole was started. The hole is perfectly round and perfectly the size of the bee.

I'm flabbergasted. I had no idea bees could dig into wood like this. I killed the bee of course. I don't want it building a hive on my deck or in my house, but wow. I thought cedar was pretty hard wood too.

There are numerous cracks it could have flown into but he dug into the wood instead?