Veterinary questions? Ask a Vet for Answers ASAP
Hi, Welcome to Just Answer. I'm Chris, a small animal Vet based in the UK. I am reviewing your question and will get back to you as soon as possible
I'm sorry to hear of this with your budgie. Firstly can I check that the Budgies are not situated anywhere where they could be exposed to any fumes? In particular smoke, cleaning products, Teflon fumes (from cooking, ovens etc) or other aerosols?
OK good. In which case we could be looking at a respiratory infection most likely chlamydopholosis, see https://vcahospitals.com/know-your-pet/chlamydophilosis-in-birds.
If we are seeing tail bobbing and increased respiratory rate then urgent treatment is required.
A trip to the vets as soon as possible will be required as antibiotics are likely to be needed to get on top of this before it causes a more serious problem or deterioration. Excellent cage hygiene is also important to prevent recurrence.
I hope that answers your question? Please let me know if you need any further help or advice.