Okay, I’ll keep monitoring before making any further decisions (or freaking out lol). Thank you sooo much!!File this away for future use. This is the amoxicillin dose for a two-month old half grown chicken. I would halve the adult dose of 250mg which would be 125mg per day. The pills are gel caps so twist one 250mg capsule open and dump out the powder. Divide in half. That gives you two days worth. You will treat for ten days.
Take one half, 125mg and mix it into a tiny amount of applesauce, yogurt, or coconut oil. use only a small amount because you want to be sure the chick takes it all. You can give it all at once or divide the 125mg into two doses and give one in the morning and the second in the evening. This is more efficacious than once a day, but busy people can safely give just the one dose of 125mg. It's what I do, and the sick chick still recovers okay.
By the time this chick is four months old, if you need to treat it with this antibiotic, it will be nearly full size then and will require the adult dose of 250mg per day for ten days.
Is that clear? The only immediate danger of not getting the dosage correct is that you may not give an adequate amount and it won't work. It's better to err on the side of too much than not enough.
To repeat, the chick doesn't need treating at this time. We still need to confirm there is a problem.