To clarify, I wasn't targeting anyone in particular. I know it ruffles some feathers when inexperienced people like me come touting some herbal cure-all based on the premise that it works on humans, so why not birds, as well as first hand experience with their animals. Then ensues the 'birds/goats/cows/pigs/dogs/etc. are different' conversation; then I completely get out of things, not because I don't want to argue about it, but because there's no point in letting my beliefs get in the way.
Anywho. For over a year and a half now, I always have Oil of Oregano on hand. I wish I could say I had ACV, AVJ and yogurt on hand at all times as well, but I can't, though I am working on it. In combination, they are intensely potent, and I have used them for myself in combinations as well. If I feel a cold coming on, I put 2-5 drops of Oregano oil under my tongue and let it sit until it burns or hits the back of my throat, then chase it with either milk or cranberry juice so I don't feel like I want to stab myself in the foot because of the burn and taste.
Oil of oregano, of quality anywho, is available at most health food stores. I get mine from Old Fashioned Foods, it comes pre-diluted and has been a consistently reliable product for a decent price -- it is not cheap, however you use very little. A bottle will usually last me a month or more, depending what I do with it (cooking). Old fashioned foods has limited hours on Sunday, but I think one location is open from 1pm - 4pm.
The herb does not function the same as the oil when it comes to potency. Perhaps over a long term it could assist a persistent ailment, but I'm doubtful the concentrations are large enough to do much noticable good in whole form. Catnip is particularly tuned to the upper respiratory tract, and a good quality, pure or self-grown plant could be very helpful boiled and cooled, water given to the animal or human (nightcap for humans). The essential oil is potent, but runs you anywhere from $72 - $95 an ounce depending on the seasons and crops. I've considered building an essential oil still for this purpose, as it's an excellent bug repellant.
I also suggest AVJ (Aloe Vera Juice) when dealing with sick animals. African tribes with livestock still use the plant today for the purpose of purging an animal's intestinal tract. It pulls negative bacteria while promoting good flora and helps cleanse the system (great for Cocci). There's a few papers you can come across using search engines like duckduckgo (not filtered), they're interesting but sometimes hard to locate. I had saved them, however I had a portable hard drive failure and seem to have lost many documents including my writing and those.
I admire those who can rely on or feel comfortable using anti-biotics. I've had too many negative experiences to put faith in it.
Keep us informed, Kat.