Your chicks are going to outgrow that brooder in a couple of weeks. Be prepared to move them.
I agree with
@A_Fowl_Guy to reposition your heat source.
One of my chicks had been pecked and was bleeding at the top of her beak on arrival from the hatchery. She was clearly the weakest. It took 3 days for my chicks to arrive.
I supported the weak chick with daily nutri-drench and cooked egg throughout the first three days. I also fermented my chick starter so they greedily gobbled it up. She caught up to the others in about a week.
The little weak chick grew up to be second in command in my flock.
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