Day 4 Duck eggs

[IrisJade]

Is it too soon to candle eggs? at day 4? ive had a little look and i can still see that all 6 eggs are still just yolk. i feel like i should start to see something

 

[Susan Skylark]

with practice you can start to tell fertile quail eggs at 72 hours into incubation but they only have a 17 day incubation, duck eggs might be a bit slower to develop with nearly twice the incubation, but being larger and lighter shelled(?) they might also be a bit easier? You could try but just be patient and keep any questionable eggs in the incubator until you are sure!