These pigeons are avoiding the letter ‘E’ for some reason.....

Image source

The wide top of the letter E is the only area where multiple pigeons can sit. Every other letter has just enough space for one.
Rather than take the risk of social interaction, they avoid the E all together.

My guess would be due to the different degrees of downward visibility. They can't see what's below them so well perched on the letter Es because of the long, flat top edges, so they prefer the other letters.

I'm going to build my house E shaped. 🤣🤣

Source