I have a hen setting on chicks that are due this monday and am woundering if I need to have a heat lamp for them when they hatch. I live in ohio and today it was 55 degree's tomarrow it is supossed to be 57 degrees they will be exposed to drafts but can be fixed very easly. There is no door on the caged in area but a small opening just big enoough for the hen to get out or the chicks. Will she leave them? The temp for the week is an average of 53 deegree's. Is it ok for the hen to ewt the chick food?