Blood ring? Day 5 candling duck eggs

[George678]

Hi just candled my duck eggs day 5 and noticed this one ( sorry image isn’t very clear) all the others had veins and this one doesn’t , it just has a red ring . Should I Chuck it now or wait a couple days . Thanks

 

[oldhenlikesdogs]

I think a blood ring means the embryo died. I'm no expert though. I generally get rid of these. Hopefully someone more experienced can help out.