In an emergency, for drops, you can even just dip your finger into the liquid and drip it that way. Most pharmacies have oral syringes, ask the pharmacist. Many feed stores also carry oral syringes. I buy 1 ml oral syringes in bulk on amazon. Some of them may drink if you just dip their beak into the water, sometimes you can do that with a spoonful in one hand and the chick in the other.
If you are changing water in the waterer often, you can keep the gallon mix in a jug and refill smaller waterers with that. I would let it come to room temp before giving it.
For the oral drench, if you are using the liquid Corid, you can give that straight, as it comes out of the jar, for the once a day oral dose, as explained in the link. Just give them 2-3 drops of that. Same with the mixture if you are using the powder form, make the mixture as explained, and give them 2-3 drops. Corid is very safe, you would have to give an enormous amount for there to be any chance of harm, which is unlikely.
If you are changing water in the waterer often, you can keep the gallon mix in a jug and refill smaller waterers with that. I would let it come to room temp before giving it.
For the oral drench, if you are using the liquid Corid, you can give that straight, as it comes out of the jar, for the once a day oral dose, as explained in the link. Just give them 2-3 drops of that. Same with the mixture if you are using the powder form, make the mixture as explained, and give them 2-3 drops. Corid is very safe, you would have to give an enormous amount for there to be any chance of harm, which is unlikely.