duck nestig question

[duck boy]

my hen magpie has been sitting on her eggs for a couple weeks now and there date for hatching is approching, when she first layed her eggs the nest was kinda shallow,ubtil today she took all of the straw in her house and made her nest huge, i was wondering if that meant any thing with the hatching or anything else.just curious.

 

[Goat_Walker]

My buff hen does that too, Im not sure if it is to accommodate for the ducklings pipping or what. I mean before, she had the eggs stacked on one another, but now she has it nice and spread out so they arent all over one another. Cant wait for an explanation