Update : post #3 I have so far raised 6 Black Swan Cygnets. The first 2 I bought in Feb, and they were almost a month old. The other 4 I bought in April at a week old from a different breeder. I fed them all a layer diet that was recommended and lots of Romane lettuce. Shortly after receiving the first 2, I noticed they walked differently than my geese and their legs looked a little funny at the joints. I e-mailed the breeder and they assured me that they might look funny for awhile and perhaps I needed to use a vitamin if concerned. I chose not to add a vitamin as I was not sure if it would do more harm then good. When I brought home the other 4, I noticed their legs looked way straighter and more like my geese. I knew then I had a problem with the other 2. The breeder even stopped buy once and I showed them, they said to give it time, but now those 2 have a lot of trouble walking and the one female I have to brace her leg as she will fall down when it hurts her and has trouble getting out of the pond. I sent new pics to the breeders and they informed me that another cygnet also has problems and they are forwarding all info to their vet. So what causes this....... ? Is there anything I can give them to help? Meera - I often have to wrap her leg as the tendon will not stay in place. I have now made her a leg brace as she now has more problems walking.... Rio - little hard to see how squatty he is, but think bow legged cowboy holding an elephant.