I think she gorged on food, perhaps did not drink enough water. The swelling was probably the food stuck in her throat.
Please describe to us what kind of food she tet, how often, type of waterer, if she gets water 24/7, temperature of the brooder, if recently they ran out of food, if they get small amounts of chick grit, if they get anything to eat other than starter crumble. Anything else food or water related could be helpful also.
Have you read the sticky on raising ducklings, or any books on raising ducklings? Those can be helpful and the sticky is free. Links in blue near the top
Of the Duck Forum
Please describe to us what kind of food she tet, how often, type of waterer, if she gets water 24/7, temperature of the brooder, if recently they ran out of food, if they get small amounts of chick grit, if they get anything to eat other than starter crumble. Anything else food or water related could be helpful also.
Have you read the sticky on raising ducklings, or any books on raising ducklings? Those can be helpful and the sticky is free. Links in blue near the top
Of the Duck Forum