Noted something interesting about these critters.
I should write an article on it.
My property has a high investation of these bees. I was remodelling an old oak outbuilding. I used pine on some facia. While I was building it, a bee came by and examined my work. It landed after some inspection.
I killed it.
The next day, that same peice of wood, another bee came by.
After inspection, it landed in the same spot as the other bee. And started boring.
I killed it too.
A few days later, yep.... here comes another bee.
Same behaviour, same spot. met with same fate as others.
Yes, I work slow.. no comments.
I observed a nice hole in the same spot, I mean EXACT same spot as the other bees. About a week after my last kill.
I wonder how they do that? Must be something in the wood. Very interesting.