A few of the ducks are in the Murano zoo. You can click the link of my signature to see the different animals that have been attributed. Many of the birds and animals are very difficult to attribute because the generic stickers have not been attributed to any certain company. Some pieces are found only with generic stickers. The prize is finding one that has an actual company sticker... but then one has to wonder if the sticker is real or if someone added it later. There is some dishonesty out there, unfortunately, with some people adding stickers or forging signatures. (For example, I recently saw a piece that I looks like it was made by Fratelli Toso, but was signed Archimede Seguso. The type of piece in question rarely has any label at all. So do I believe the signature or trust my instincts to let the piece remain unattributed? The seller in question sells a few things with questionable signatures, so the decision to trust my instincts was easier. Still, it gave me something to think about.)