I have a pair of American Singer canaries that have hatched a single chick. The little one seems to have a problem with its legs and at two weeks basically lies flat on its belly because its legs won't support it. It is very slow to fledge and I think must have heart problems because it literally pants and its underlying flesh tone is blue. I have no way to humanely end its life and I am in a quandry as to what I should do. The mother bird is faithfully feeding and caring for this little one but I doubt it will ever be able to stand up much less sit on a perch. Any suggestions??? Thanks for your help.