Once 1 baby hatches, Martha probably won't leave the nest until she is satisfied all have hatched that are going to. Any babies that hatch will stay under Mom until she decides the eggs are finished. Even if this takes over a day.
Once Martha is satisfied all have hatched, she will take them to food and water.
I've read about folks that did this before hatch and after. Really, you know Martha best. You are better able to decide this.
With my one experience hatching in the coop nest boxes, I let her hatch them right there. My nest boxes have a one foot drop to a wood floor covered thickly in pine shavings. When she went to move them she had 4 babies. She got 2 out and covered them on the floor. I came in and the other 2 in the nest box were trying to figure out how to jump. She was coaxing them on. I went ahead and moved them to a private area at that point. It was my very first hatch. I was a nervous Nelly!
This is Mama Bird with 2 of that first hatch. She got her name because she was my first broody. I still have her. She is 11 years old and my oldest hen.
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