I completely agree - as an observer, I know my "special" drake's life is more difficult than his siblings' because of his disability, but the important thing is that
he doesn't know it's different for others, and he just does the best he can. I was amazed to discover that he can go up the ramp to his coop at night, and that he heads up when he hears us coming to secure the coops (the others just loiter and wait to be herded in, sigh). Such a smart guy...he's never felt sorry for himself...he just enjoys each day and attends to his important duck business. At first, I really wasn't sure if I had made the right decision not euthanizing him because he has to survive in a large free range, mixed species flock, but he's a trooper. I know I made the right decision now.
Thanks for sharing your story - it may help someone who's on the fence about how to proceed with a blind duck understand that this kind of impairment doesn't automatically mean a poor quality of life...and it may also inspire people.