Ducklings w/ swollen throats? And trouble eating

[KezG4]

I have two ducklings (breed unknown, labeled as “assorted”, probably pekins) that I bought a week ago from TSC (I’ve owned ducks before but all were bought from private owners), and every time they eat they throw up a bit or have bubbles coming out of their noses? Also today I noticed that their throats were swollen while eating; my dad thinks it might be swollen crop but this has never happened with our previous ducks. The area from right below their jaw down to their crop is tender and swollen like a balloon, and if you look at them straight on their right side of their neck looks enlarged. I’ll try to get a picture
3/4 of the pictures are duckling A (dill), the darker one is B (daisy), sorry for bad quality

 

[Hannahnic14]

That looks a bit high for a swollen crop, could they have gotten bitten by something? Bug, mosquito, bee sting?

 

[KezG4]

That looks a bit high for a swollen crop, could they have gotten bitten by something? Bug, mosquito, bee sting?

I thought it was too high to be the crop too, but no, they’re inside ducks (lol) and have been within eyesight all day as usual I saw them throw up a bit/bubbles coming out of nose when eating so I went to see if they were choking and that’s when I noticed

 

[Hannahnic14]

I thought it was too high to be the crop too, but no, they’re inside ducks (lol) and have been within eyesight all day as usual I saw them throw up a bit/bubbles coming out of nose when eating so I went to see if they were choking and that’s when I noticed

I'm sorry! I'm no help but maybe someone will see this!