why is the hen making a huge nest in the coop after the chick was born?

[Bobet50]

its been about four days now since the chick was born and I moved the other three chickens back to my small coop, the mama hen has been scratching all the hay/straw around and also dumping the food and water everywhere somewhat making a nest but still lays with her chick in the corner and just stares up her work.

any ideas why?

 

[TheTwoRoos]

That’s what they do,it will last till she rears them off.