When to candle duck eggs?

[Corey NC]

When is the best time to candle? These eggs are saxonys and calls.

 

[SundownWaterfowl]

I candle my call duck eggs around 5 days.

 

[hatchcrazzzy]

i candle mine at 10 days you can see more in the eggs by then you will see a black dot and its heart beating

 

[BeckyBird]

If you are too excited to wait like I am, you can candle calls at age 4 days. You can see the tiniest little red veins. But if you don't see them, don't throw the eggs away. Day 7 is best to decide what eggs to keep and which to toss!