What is the most logical next event?

How to treat conjunctivitis in cockatiels
Get your bird examined by an avian vet.
The condition can be caused by a lot of different things, such as bacteria, fungi, nematodes, protozoa, and injury. Your vet will examine your bird, including lifting the eyelid.

Options: a. As well, they may bring a prolpole biopsy. By having the bird checked out and given a history, you should be able to tell if the disease is harmless.; b. She will also check your bird's beak and mouth. The vet cannot take the bird for examination if she is pregnant or nursing.; c. They'll also have a pre-operative exam, looking for parasites and infection. A veterinarian will also be able to examine your bird's eye.; d. They may also test the discharge from the area to look for a bacterial or fungal infection. Your vet will also determine if your bird has an upper respiratory infection, since they can cause conjunctivitis.;
d.