I need advice, help, reassurance....I went out to the coop to feed the chickens this morning, and one of my white leghorns was dead. She was lying on her side as if she had just fallen over. There was no blood around her. I had 5 white leghorn hens and have one rooster, also 16 EE chickens. The leghorns are 24 weeks old and the EE 20 weeks old. All of them had been eating well, socializing, seemed fine. They eat a chicken layer blend along with some table scraps, grass and clover from the yard. I was going to put some gloves on later and go examine her. What am I looking for? What would cause this? Will all my other chickens just drop dead? I am a first time chicken parent and this is very distressing to me....help!!