here is the chart at 28 days Your egg doesn't look like these http://wildliferehabber.com/candling-eggs
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Dipped air cell can mean duckling is getting ready to hatch. Have you seen any movement at all? I can usually see movement until about a week before hatch.
I stopped seeing movement 5 days ago, give or take. Does the air cell dip before or after internal pip?
Dips before pips.
5 days is not hopeful, but they do rest and test our patience.
@Ducklove1202 gosh it's hard to tell. No odor is great news. No movement can go either way. Definitely nothing in the air cell. Can you do a float test? https://www.backyardchickens.com/t/...ng-egg-viability-for-late-or-overdue-hatching