[Tbugs]

Just because something may be legal does not mean it is the right thing to do.

Put yourself in their shoes.

If ARB approval is gained, you are legal to build to the permission of ARB. If you do speak with the neighbors about it and it seems they are going to be very upset by the birdcage - is it worth it?

What if the table was turned and you would be upset by their decision to build something you thought was unsightly? (not that a birdcage is unsightly.)

As I said in my first post, let your conscience guide you. Or you can just build as soon as ARB gives the approval without a word to anyone. It is your decision.