I need some urgent help. 2 of 3 of my new show seramas became lethargic and almost cold looking without warning (within 24 hours). the coop is left at 65 degrees F and their dropping look fine. one of the 2 hens in the trio laid an abnormally small egg if that matters. they haven't laid sense i got them (3 weeks ago). they are eating and drinking fine. should i give them electrolights to give them energy? what should i do and will i loose them?