I'll put a capped queen cell in a breeder hive, or a hive I'm requeening. I've learned to not not check on it for a couple of weeks as she's bred. I've lost a few that were apparently rejected before they had become established layers. Once I crack the hive open look to see how the queen cell appears. Assuming the cell is properly opened from the tip any laying queen you find in there is your fresh queen. If the cell is opened from the side you apparently missed an unknown queen and the laying queen you found is not the one you were expecting. When you do find them it's always the perfect time to mark them. This allows you to better know if they've been replaced later on or if a nearby swarm you capture has one of your old queens (that now needs to be replaced).
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