The first time I ordered and had shipped, I ordered 2 cayugas, 2 magpies, 2 goslings and 6 chicks. They came a day late. I purposely ordered extra chicks because I know they are typically more fragile and had never lost a duckling yet. I think I lost 2 or 3 of those ducklings and 1 chick. I was shocked. So I ordered again a week later to get the breeds I wanted of ducklings. I ordered extras that time, just ducklings, and everyone survived. So now I have more than I originally wanted but that's ok. I think it really just depends on how strong they are and how their shipping experience goes.
I did decide after that, I probably won't order again online unless there's a specific breed I'm looking for. Otherwise I'm just going to hatch my own mixed breed eggs or buy locally. I just had my heart set on cayugas and more magpies.