Duck eggs won’t hatch :c

[ineedduckhelp]

My duck laid a few eggs and started sitting on them about a month ago. None have hatched and some have even started to turn blue. We have also found many broken eggs outside the nest. I don’t know if i should take them away from her because the her and the drake are very protective of them. please help me and let me know what i can do !

 

[Yardmom]

Is she still setting? If it has been over a month remove eggs (unless a muskovy they take 5 weeks) I think I need to do the same with my muskovy. Sometimes eggs get contaminated and our domestic ducks don't understand to stop setting. They just wait for the hatch.