Hi it's me again! Well now we have a beautiful swan that is sitting by the side of the lake for hours, defecating right where she is lying, and when she goes back into the water she scoots on her abdomen. (I have never seen her walk, but she is said to be old.) She IS swimming fine, and eating when people feed her. I am worried that she is literally a "sitting duck" as she is not able to walk apparently. Today I read an article about how some algae can kill dogs. Does anyone know if that could be the problem with her? I have talked with a Vet and she is planning on coming to the lake to do an evaluation of the swan....Any help is appreciated. Thanks!