A woodpigeon has nested in my window box

A woodpigeon has nested in my window box. I am on the top floor (fourth). I have lived here for 34 years and this is the first time this has happened. Two eggs have been laid, the first on 1st May and the 2nd today (5th May). This is very exciting!  I live in central London WC1.  She has nested on my kitchen window box and watches me move around in the kitchen, watching me cook at the hob and watches me wash up without flinching. :) I have kept the window closed as I don’t want to disturb her. Is there anything I should do?