1 swollen eye, now with bubbles

[Chold05]

That is not rales or crackles. I would call and ask specifically if your vet can test for MG. Who would they send the test off to? If the chicken does not currently have symptoms—mucus from nostrils or bubbles in the eyes, the test may be not accurate. They stick the swab in the back of the throat to collect cells. You may be better off getting a chicken tested by an NPIP tester or your state vet. Zoologix in CA will send testing supplies, but is a little pricey. You will spend a lot of money at your vets, if they can do the testing. That would be up to you though.

Thank you, thank you, thank you!!