Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to treat conjunctivitis in cockatiels [title] Get your bird examined by an avian vet. [step] 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.

Ending1: 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. Ending2: She will also check your bird's beak and mouth. [substeps] The vet cannot take the bird for examination if she is pregnant or nursing. Ending3: They'll also have a pre-operative exam, looking for parasites and infection. [substeps] A veterinarian will also be able to examine your bird's eye. Ending4: 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.

Answer format: ending1/ending2/ending3/ending4