will a duck hatch out chicken eggs?

[spish]

i am so desperatly wanting chicks from our cockeral because he's so beautiful but cannot afford an incubator. so i set up a homemade aquarium incubator the other day and popped some eggs in to give that method a second shot.
anyhow yesterday morning i noticed one of the ducks had just started sitting on eggs, so ive popped 4 chicken eggs under her too.

so far shes not kicked them out.....what do you think the chances are of her hatching chicken eggs?

 

[newnanchic]

She will hatch them you will just need to keep a close eye on her because when they hatch you will need to take them away from her or she will lead them to water like a duck does naturally . And the baby chics will drown because they cannot swim like ducks do.

 

[spish]

yeah i kinda guessed that so marked the dates on a calender so i know when to start checking