If they are still around put those eggs somewhere where they can still find them cats or not - at least you will have not murdered the babies - I feel horrible for the birds - we humans create horrible messes just with our existence what if mother earth does not want us there anymore because of our mess - You know you did something wring or you would have not posted it - if you can't find it in yourself to let them live in what you believe to be you space then at leat find a decent compromise . Just saw this was 6 days ago so they are most likely dead - I feel so sad ...