Please do not give powdered milk to birds. They can tolerate the yogurt's lactose because of the bacterial action. They can't milk.
Silkiechicken is right - do as she says and you'll do well. Then every day you'll want to replace their good bacteria in their gut because apparently those are compromised. That's what you can use the yogurt for - just not the milk please.
For the yogurt, and babies, I mix a heaping tablespoon with a cup of food, some water, egg yolk mashed in (boiled), to the wetness they'll eat. Start it dry so you can add water. Then take their food up for an hour, replace it with this mixture. make sure they all eat some.
Be glad that it's coccidiosis, actually. It's much easier to manage and treat than bacterial issues.
In the mean time, what are you feeding them? They should still be eating medicated (with amprolium, not antibiotics) crumbles. What's their bedding like? How's the heat in there since that seems to be a concern? My chicks this year liked to poop in their water - is this happening to you, too?
We'll try to get you through this, and I'm sorry for your losses. But when you see blood it's usually very far advanced. But hopefully you can take things in hand now.
By the way, only treat these babies. And incidentally, you'll want to look carefully at their droppings daily. At this age, they should be solidish greenish brownish tan with white urates on top. You'll see occassional chocolate pudding droppings, but they shouldn't be the majority. I get concerned when I see rusty, orangey brown droppings that are not very solid. I also think of cocci first if I see mucusy stringy texture;
People unfortunately have been told that if there's not blood, it's not cocci. Not so. Often cases of coccidiosis can be picked up earlier if we educate ourselves on the fine art of...... poop. I hope this will help you. Please let us know how we can help. Feel free to PM me with any questions about what i've added here.
