Light transmitted

The camera captures an image, and with my intent on composition, focus and exposure, my contribution is set within.  Post processing allows the photographer to continue making his image his own. The brilliantly bright bird was created by the architect with a stencil like hole in the roof, my contribution was to use a mask and create another bird for harmony. I made it as small so as to ask the question, how much do we need to change an image to claim ownership.