I understand the "logic" behind the survival of the fittest, however in incubation I disagree with it solely on the fact that half if not more of the problems that effect the hatch of artificially incubated chicks is not the quality or strength of chick, but rather our inefficiency to provide them with optimal incubation/hatching conditions. One of my strongest best layers was an assited hatch. Not a thing wrong with her. I can understand that mentality more with say broody hens, where nature is at the helm, but I don't think a chick should perish if it's a matter of my fallibility.I am one who does not assist - I am looking for hardy, sturdy chickens that can reproduce themselves without undue interference. But each hatcher must make that decision for themself. I have also never measured an air sac, just candled on day 10 and day 18 to remove obvious clears.
You may be interested in reading about dry incubating, my success with shipped eggs in particular has increased significantly since using it.
https://www.backyardchickens.com/a/how-to-incubate-hatch-eggs-using-the-dry-incubation-method
Plus like I said, small time chicken raiser, ALL my potential chicks are important to me.
