@Mixed flock enthusiast Your input is appreciated, sort of a jerk back up above the trees.
One difference - for me time is much less of a consideration. I am retired, live alone and started down the "chicken trail" to provide an additional activity/interest especially in the winter.
I have been carefully watching feed consumption by my flock as this thread has developed. Our weather has fluctuated from very cold (-12C night, ~-5C day) for the time of year and normal (both day and night around OC). During and after the very cold period the intake by the chicks of the local mash has increased while consumption of the 22% protein declined (their feed location is separate and not accessible to the older pullets so easy to monitor). I frequently see them eating from the main coop feeder that has the mash.
I also have feed and water in the run, this area is mainly used by the older pullets during the day while the chicks tend to remain inside. Originally I was providing mash in the run but changed that to the 22% feed 3 days ago; now trying to quantify amounts consumed but it seems that they eat the 22% when they are out and visa versa when they are in, no apparent preference.
I provide crushed oyster shell in a separate container hung on the wall, both groups take from it on a random basis. I will introduce grit starting next Monday into the inside dust bath and will also put a small container inside the brooder where only the chicks have access (the older pullets use the dust bath frequently, the chicks do not use it at all).
I provide "treats" a couple of times a week, usually scrambled eggs, banana, fresh veg cutoffs, ....). I am considering both fermentation and addition of meal worms.
I will formalize documentation of consumption and laying behaviours into a spreadsheet starting today although I have some pasts days info that will go in.
You will probably have noted that reducing to a single feed was my goal in Post #1. With this thread development I have moved away from that and will spend some months, through March when the new chicks start (fingers crossed) to lay, continuing to offer a variety and letting the flood decide for themselves. In late March I will start to let the flock free range a "few" hours per day when I am here and observe what results from that.