Not just the pink bill but the lack of color in the eyes (hers are blue) and white feathers. It can show up as just a patch of missing color.
You really can't tell from the picture but Blondie was pure white. Probably what people call light splashes are leucistic instead! We had seen some...
She is missing pigment in her bill, feathers and partially in her eyes but not totally on her legs and feet. You are right, true albinos have pink eyes and no color whatsoever.
If she were a white duck, her bill and feet/legs would be yellow or orange. It's mainly the clear, pink bill that...
UPDATE. I talked to someone from Texas a&m at my last show. They said she is leucistic and our next hatch is comeing hopefully I will get more ducks like her! Cuddle quack or alarm has the gene we have got it before in our ducks!
My flock has one 7 alarm one waterfowl champion at the State Fair of Texas also at Bluebonnet poultry show which is the biggest in Texas and I got the best display at the State Fair yes I have compared them
We got them from metzer's hatchery alarm is definitely pure because she she is show quality. Cuddle Quack has black spots on bib which is normal in the breed but is still a show quality duck. I have seen it called rare white swedish ducks in Australia