I have received my new flock yesterday and so far around 5 chicks have died out of 36. ..they just get really lethargic and sleepy looking and just fall over after about 12 hours. Don't know if it is fairly normal or the bad weather and cold coming from the hatchery. ..dono... any suggestions. ..I have the brooder set up correctly by the book... The chicks effected just seem not to be able to get up on there feet and die...please need some helpful advice Thanks !!