I just ordered 12 Welsh Harlequin ducklings from Metzers!!!!!! Just think, last year about this time my first 6 ducklings arrived. I now have 10 ducks with 12 more on the way. I am now selling duck eggs locally and cannot keep up the the demand. My question is this. I would love to be able to tell the ducklings apart. What size legbands do I need for ducklings? I figure if I start with the right size I can buy bigger and bigger sizes as they grow in order to continue to tell them apart. Since I don't have ducklings currently I don't know what size to start with.