Well, indoors it is too warm for them to rest on the kitchen counter. we have a wood stove going. I am collecting only about 6 eggs per day and of course 42 fit into the incubator.
I have been setting the egg cartons on window sill in the bathroom and cracking the window open a little to add cool air.
I think using a cooler would keep the temp more even. Have to put a thermometer in there and be sure there is air exchange. I think I'll try a set up without the eggs and see how many ice cubes or freezer packs I need on the bottom to keep at a certain temp.
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Heritage Hens