I'm glad to hear that though I wouldn't continue to do it, it causes anemia and gastrointestinal chemical burns.I've given him garlic before and he's eaten it whole many times which is why I tried it again today, but still I will keep an eye out.
Actually, we live in india and generally the temperture here is high. He is not used to such cold winters. But he responds well to heaters as I've been using them for him since he was a chick during winters. However, I switch them on only for a little while and then switch off so that it doesnt get too stuffy, but I will switch it off now.
I dont have any other birds though pigeons come to play and eat in our balcony. He is acting normal and I pick all of his poop and keep an eye on it as well. He hung out in the sun today per usual.
He's acting normal other than the runny beak?
It could be an allergen if he is.
I would hold off on giving him antibiotics, natural or otherwise unless it's obvious he has an infection.