Possibly abandoned duck eggs, what should I do?

[OwO]

This morning a mallard duck was sitting on 4 eggs that are in my garden, but we didn't see her and she got disturbed and has left them. It's been about 10 hours and I don't think she's been back yet.

Is there anything I can do to save them, or is the mother likely to come back? The temperature is about 15°C and I own chickens so I would be happy with ducks if I'm able to save them.

 

[_-Captain BRM-_]

Broody hen or incubator??

 

[Isadora]

Broody hen or incubator??

Did you read the first post?

 

[_-Captain BRM-_]

Did you read the first post?

... I mean does she have one that she can stick the eggs in/under... Right?

 

[OwO]

I have neither unfortunately, never hatched eggs before and no broody hens atm. Is there any workaround for the time being and I'll get an incubator if I'm able to save them?