Hi, the advice above is excellent. Please if you do not have a first aid kit, Start setting one up now!! Vomiting and accompanying weight loss leads quickly to dehydration, starvation and death. Please ask your avian vet to check for Fungal related illness of crop and gut possibly supported by bacterial infection.
The kit should include a ceramic heat only lamp, Avitech sugarfree electrolyte, or Guardian Angel, Which is my favorite but if infection is fungal related can add to the problem as fungus loves a sugar substrate. But use it in an emergency to keep Basil going.
Possibly ask for a shot to start and then oral by beak dosage and a followup with a long shelf life that can be frozen or refrigerated if possible for emergency in future. Explain the transportation problem you have so that you can spend you vet bill dollars on Basil instead of transportation cost.
We have several meds that our vet sells us in bulk that we can freeze to prolong shelf life just as our vet does. Always keep on hand Braggs ACV
or similar with mother in it. My husband uses it for times whenhe is under the weather as well. Also a probiotic to help your birds immune system fight
bad bacteria in the GI tract/Gut.
Check out the info in the Stickies at the Top of the Illness and disease section of TB. Ladygouldianfinch.com, Windy City Products, All Bird Products, and cutelittlebirdies aviary All ship international to Canada and elsewhere unless prohibited by import laws. Windy city Parrot has an ala cart section for a birdy first aid Kit. just adjust for tiny birds like Basil. They also carry Avitech products which has a line of homeopathic tinctures for fungal and other issues. Clean out an old medicine bottle and keep corn starch to stop bleeding in it and also a quick blood stop for nails, which sometimes resist corn starch. Above all keep millet spray as when a budgie will not eat or drink they will usually eat millet spray pre soaked in electrolyte and probiotics
prepared drinking water.
Copy Deborah's sticky on home made electrolyte for emergencies that do not include fungal illnesses. I could go on but you can find further examples Here on TB as you read through the sections. It took me a number of weeks to read through info here on TB but I am glad I took the time as I learned a lot about caring for our beloved little budgies. I found TB years ago when I could not reach a vet during a holiday weekend and found The wonderful staff of TB instead.
Remember to cove basil's cage on three sides and even a sock or plastic bottle filled with hot water and wrapped in a towel and placed near /under /over the cage will provide extra warmth at night or traveling to the vet.
Amazon sells a pet snuggle made of hard plastic that you microwave and it hold constant heat for 8 hours+- and it is portable with no wires. We even use then as foot warmers in our bed. We put one under the hospital cage and cover the cage at night to keep budgie toasty. For long term use day and night we use ceramic heat lamp with reflector that can be aimed at a cage to avoid water dish and allow a place for the bird to move a way from the heat. My husband made me a light pole for different lights out of a very long thick dowel and an old iron umbrella stand base. So we can provide various types of electrical needs to a number of cages at once.
It is not fancy but it gets the job done. best Wishes for Basils return to good health, Jo Ann