I know this was a newbie mistake, but I candled the eggs today, which is day 5. I have had recent complications and wanted to see if they were doing alright. It turns out, 8 of the 9 eggs are developing. The other is infertile. Also, a question. When should you candle a duck egg. Thank you. This post was just to report my incubating experience.
I made a really long and detailed post and then my IPad deleted it, I give up. Sorry! I'll do it in bullet points instead! Don't candle unnecessarily, you were right to do it in this scenario but try not to if its not a candling day! For Chicken Eggs candle on the 7th, 14th and 18th day For Duck eggs candle on the 7th, 14th, 18th and 25th day. Although both of these lists are flexible, as long as you're not candling them too often then you can candle on any day that isn't lock down or between day 11-14 for chicken eggs. Useful Links : https://www.backyardchickens.com/a/hatching-eggs-101 https://www.backyardchickens.com/t/304863/duck-egg-candling-photo-diary