I have a broody hen and I purchased 6 3 day old bard rock pullets at tsc. The other pet store had leghorns and Easter eggers which I wanted for my flock but they were 6 days old. The hen has raised chicks for me in the past but they were always 2-3 days old and she always does a really good job. What is the chance she will take older chicks? I am grafting them tonight.