Thank you @Amiga I think they are stars
@Miss Lydia I originally started this thread because of the problem with Bukowski's legs. As a duckling B's legs have always been spread quite far apart. I only found out recently that B most likely has a niacin deficiency and have since been using traditional yeast in their food and giving B warm baths in the hope his legs get some more strength in them.
It is quite hard to get a decent photo of B but I will try on a different surface. Ed on the other hand is more than happy to show off for the camera.
They are both nine weeks old and Ed was one of the larger ducklings out of the original paddling. Is there anything that will determine gender in terms of their behaviour?