At last I got the my incubator!
The idea behind it is simple. A hen can hatch maximum 5 – 9 chicks, but she can raise 12 – 20. So instead of running and searching for chicks for adoption I can start an incubator in parallel with the broody hen. The chicks for adoption will be ready right in time!
I couldn’t hold myself and started the incubator with what eggs I have now. Some of those eggs are 2 weeks old. They also were exposed to cold for some time ( but never freeze). So the chances are miserable. But I know for sure both mother and father of those eggs and there is always a hope!