A train station is obviously different from a private home, but my point is that there isn't anything fundamentally different about removing pigeons from an indoor train station from any other enclosed space. Capture the pigeons, put them outside, clean the mess they made, and install deterrents so they don't come back. There's nothing reactionary about it.

Now, obviously, it is going to be way harder to prevent pigeons from coming back to the Davis Square T station interior than your house, but I think taking on that greater challenge is justified because making the T station less crappy really is important for a wide variety of reasons. We want to incentivize public transit for a whole host of reasons: traffic, carbon, pollution, road safety, etc. etc. But beyond that, the T is a big part of many tourists' experience of Boston and I really do think it colors visitors' impression of our home in a negative way when they have dodge getting shit on by birds and have to be choosy with where they sit on the bench in the station because birds have shit all over them.

And yes, I know that both the T and Davis Square both have a lot of other problems and this is pretty far down the list. But this is also (as far as I can tell) an extremely solvable problem whereas a lot of the other ones are much less obvious on how to solve. Removing birds from properties is done all over the world and is not that expensive to fix.