Found egg, fertilized?

[Jnellfair]

Hi,
I found what I believe to be a duck egg (taken from the nest by crows) in my yard today. Can anyone tell me if it is fertilized and/or viable?
If yes, how do I incubate it.

 

[CayugaJana]

Do you have an incubator? The only way to know if it’s fertilized is to incubate it for 7-10 days and look for veins in the egg.

 

[Jnellfair]

I don’t have one. How soon does it need to be incubated? What is the best way to incubate?
I’m assuming burying it in my cat’s bed and having him sit on it will not work. Lol