No, my first broody was a hatchery chick and she never beat her chicks to death. But again, the other very broody hatchery mama did. Hours old. My new chick which I took from a broody from last springs hatch of our own stock. She is busy on some duck eggs. the new chick naturally started scratching. they are born to it. the mothers are broody and nice or broody and mean.I was told that hens that came from incubators are not good mothers because they never had a mother to train them in taking care of chicks. Is there truth to this statement?
The good mom was pure bred, americauna wheat color. bad mom partridge chantecler, very broody though. Like the silent killer in the flock. I don't kill mine though. It has to be natural.
Some chicks and more to your point, are like wise better foragers because of breed. I would not worry. I do take care though that even with a pecking order that no one is going without food. I think that has been the only unaturall cause of death around here. Due to weakness and disease settling in. I have a BR right now anemic from parasites. So which comes first the immune system declines and parasites set in or visa versa. I am no expert.