We have 3 black cygnet swans they are about 3 weeks old. One of the cygnet we keep finding on it's back and is unable to get up. The other 2 are having no issues. We brought the swan in the house as the others were beginning to pick on it. It has been very wet and humid here. The cygnet moves it's legs well but seems almost drunk when it tries to stand. It wobbles and then starts to lean back and then falls over backwards. What can we do to save this baby.