I'm new at this and I only had 4 chickens to begin with! They are April babies. I keep them in a tractor, though recently started letting them free-range for a little bit. Last Wednesday, one of my them just up and died. She seemed fine in the morning and we found her dead in the afternoon. It wasn't even hot that day. (We have had a lot of rain lately though ) So I started treating with Sulmet and Gallimycin in their water. Maybe I got the dosage wrong. Today, another hen died. She seemed fine yesterday, though a bit tamer than usual, but was eating and drinking. Now we are left with just 2 chickens - they are our favorites and I just can't lose them too! One of them is definitely not well. Though she is eating and drinking, her comb and wattle are paler, her eyes have lost their spark, and she is not her usual talkative, spunky self. I caught her pooping and it was watery, yellow, and green. She is the only one who had started laying. I noticed she hollered for quite a while after she laid an egg yesterday, and it was streaked with blood. I added Wazine and electrolytes to their water, doubled the dose of the other meds, and gave them a bit of yogurt tonight. Should I take her to a vet? Is it too late to save her? Should I have a necropsy done on the dead hen? Any ideas would be greatly appreciated.