What's the longest incubation

[journey's end]

in a non mascovy duck egg that you had that still hatched? I have 4 saxony eggs in the bator that were due on saturday. That means they're3 days late now. I don't want to toss them if there's a chance, but I would like to free up the bator. How long overdue is too long?

 

[TK Poultry]

i say 5 days after the calculated hatch date thats how long i wait