Broody Duck adopting a peafowl egg questions

[toxicworlda]

My half siblings and my step mom found a peafowl egg at the zoo and got to take it home, they have it in a home made incubator but my ducks just went broody on some eggs. So my dad is going to bring it next weekend. I have a few questions though.
How many eggs can a runner duck sit on?
How many duck eggs is equal to a peafowl egg?
And if I hatch peachick under her will she still sit on her ducklings?

 

[toxicworlda]

Also how long can a peafowl egg go without the warmth of a broody or incubator?