Recently my house has been invaded by some colony of ants. I am not sure what type of ant they are, but they are small, black and very fast. But, I have noticed something that seemed very strange to me. The wall of my bathroom is covered in a lot of these ants. It isn't an extreme amount but it is around 20 ants spread across my wall. No 2 ants are next to each other and there is quite alot of space between them. that's not the the strange part though, every single ant there will be there for hours in the same spot. Every time I go into the bathroom all the ants are in the same spot as before, not moving. They are alive though because I would nudge them and they will move a little bit. I have started to notice this same thing through out my entire house.
If anybody knows what they are doing please let me know.