Just checking in here. I feel really badly for the OP - what an awful decision to make.
Speaking as a member, not a moderator...shame on all of you for trying to use a major guilt trip on the OP.
One comment in this thread thus far spoke to me: "...have a heart...." was used in the argument to allow the chick to live. Well, the way I see it, have a heart and humanely euthanize the chick. As stewards of our animals, we need to be responsible for them. Period. The responsible thing to do is put this chick down immediately, before it suffers. What a kind-hearted and loving thing to do for this little one!
I wish the OP the best in making this decision, whatever it might be. Be strong, be wise.