As I understand it the eggs don't start developing until they are consistently warm by a broody duck. Then they all start developing together so hatch together. The older eggs might already be too old to develop.
By candling you can eliminate the duds as you find them. I usually start on day 10 because I find the results clearer. Then I candle several more times. Some ducks will remove eggs from the nest. I think they know which ones aren't going to make it. I have candled these ones and have always found the duck was right.
We are all just doing our best. Don't think of dud eggs as killing them. Some won't have been fertilized. Some won't fully develop. Some won't survive the hatch. For me is is easier to accept a dud egg than a weak duckling which fails to survive. That is not bad - that is just the natural way of things.
By candling you can eliminate the duds as you find them. I usually start on day 10 because I find the results clearer. Then I candle several more times. Some ducks will remove eggs from the nest. I think they know which ones aren't going to make it. I have candled these ones and have always found the duck was right.
We are all just doing our best. Don't think of dud eggs as killing them. Some won't have been fertilized. Some won't fully develop. Some won't survive the hatch. For me is is easier to accept a dud egg than a weak duckling which fails to survive. That is not bad - that is just the natural way of things.
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