I believe you are right that the mothers get better over time. But I also believe that chickens are not fit to survive in many habitats. Some habitats just bc of a predator overload. Even if they are well nourished in combination of what they find and have access to safe shelter in the night what the owner or the public gives them, free ranging can be to tough.
Some breeds do better in surviving than others of course. But there are surely habitats where even the best heritage breeds and mixes wouldn’t live long as a group or a tribe due to predation.
And experiencing many losses is for most people a good reason to keep their flock more secure.
I’m not so sure anymore. As you know, after the fox attack back in September, I locked the birds up for a long time. I too, was worried that the fox would come back and decimate the groups. I had tangible proof after all; the fox came back the next morning after the attack.
Being a few months away from the situation however, I’m starting to think that I’ve got things backwards. If predators were to come back day after day, slowly killing the whole group, then there is simply no way Shad’s tribes in Catalonia could have worked. It is my understanding that the property the Catalonian tribes were free ranging was right next to a national park; surely more wild, and as such, a larger number and diversity of predators than what I have here.
On the other hand, cooped flocks gets killed by the dozens from fox attacks (granted that the coop can be breached). In a free range setting, at least the birds have a chance to escape.
There are definitely going to be losses when free ranging. Quite a few in the beginning I imagine, before the birds have a chance to become predator aware through learnt behaviour and natural selection.
At some point, though, most of the birds will be predator aware, and capable of avoiding most threats. Naturally, when the predators realise that they can no longer hunt the chickens with ease, they will move on, only coming back periodically, if at all