This morning I went to let my chickens out. They free roam throught the day. I have three chicks approximately 10 weeks old. They stay in a separate hen house at night than the rest of the flock. Well today I went out and two of them were dead and the remaining chick was very lethargic, a bright red comb and eyes swollen. My first throught was the temperature but it barely got below 40 last night. I examined the rest of the flock and everyone else looks okay. Does anyone know what could have happened and if the rest of my flock is in danger? My heart is broken as these are the first babies we have raised from day old. Please help if you have any information. Thanks in advance. UPDATE: My husband thinks that they may have followed one of the workers into the shop and pecked on mouse poison. He is checking when he gets home.