The last ducklings that we got that were from a hatchery had the right hind toe already removed. Even at 6 weeks you can do it, if you know for sure it came from captive stock. There might be a dab of blood, but it still isn't bad. It is supposed to be done no later than 6 weeks of age. We tried to find the seamless legbands, but couldn't find any. Even the NationalBand.com didn't have them except for pigeons.
Maybe someone else will have some info...
