I have a hen about 9 mos old. She went into her pen along with the other 8 ducks on Thrusday evening. All 9 ducks (3 cayauga and 6 Hybrids, same age, all hens) were fine. Friday morning she could not walk. She takes a couple of steps and falls down. She can not sit. She stands like a statue. She stood all through the nite. She eats and drinks and has green diarrhea. She likes stand in the warm water that I've put out for her. I live in No. Fl and it was cold last nite. Today she can take a couple of steps without falling over, but that's about it. CAN ANYONE HELP ME? I would appreciate any advise. Thank you