Our runner duck spontaneously went flat on her back and wouldn't move. I went for her and picked her up. She managed to have energy to try and run away, but then just fell over. I picked her up and she is very limp. I had her outside a lot today and the last couple days. I wonder has she caught a chill? Now, she is on my husbands lap, her neck is very limp, she won't accept clean water, I slowly put her beak in and see her breathe out and then remove the cup. I wonder if she ate too much dirt? We love her so much and they've been doing so good, that I wan't expecting anything to go wrong! They're still on non-medicated starter, I was going to introduce grower and grit tonight! Any suggestions as to what the heck?!